Статті в журналах з теми "Noé (1987-....)"

During the past two decades, there has been an outpouring of research on the seaboard mortality associated with intercontinental migration during the seventeenth, eighteenth, and nineteenth centuries. The focus of historical interest in this linkage between mortality and migration has been the Atlantic slave trade. We now have mortality rates on voyages from various regions in Africa to various destinations in the Americas, from the late seventeenth century to the mid-nineteenth century (see Curtin, 1968, 1969: 275-286; Klein and Engerman, 1976, 1979; Klein, 1978; Postma, 1979; Miller, 1981; Cohn and Jensen, 1982a, 1982b; Cohn, 1985; Eltis, 1984, 1987; Steckel and Jensen, 1986; Galenson, 1986). These slave studies have spawned renewed interest in the mortality associated with other seaborne populations, and mortality rates have been calculated on Dutch immigrant voyages to the East Indies during the eighteenth century, European convict and immigrant voyages to North America and European immigrant voyages to Australia during the eighteenth and nineteenth centuries, and Indian and Pacific Islander indentured labor voyages to Fiji and Queensland, Australia, during the late nineteenth and early twentieth centuries (see Riley, 1981; Eltis, 1983; Cohn, 1984, 1985, 1987, 1988; Grubb, 1987; Ekirch, 1987; Morgan, 1985; Shlomowitz, 1986, 1987, 1989; McDonald and Shlomowitz, 1988, forthcoming).

W.R. Cook's (1989) article “Using the Internal Rate of Return in Public Sector Project Evaluations” in the October 1989 issue of The Canadian Journal of Program Evaluation recommends using internal rate of return (IRR) in place of net present value (NPV) as the decision rule for assessing the economic desirability of alternative public investments. The original article, the reply by Watson (1990), and the response by Cook (1990) do not fully address the reasons for which the NPV decision rule has been consistently recommended as the formulation for use in financial analysis (Canada & White, 1980; Clark, Hindelang, & Prichard, 1984; Copeland & Weston, 1980; Herbst, 1982; Levy & Sarnat, 1986; Quirin & Wiginton, 1981; Viscione, 1984; Wilkes, 1983) and public-sector cost-benefit evaluation (Broadway & Bruce, 1984; Dasgupta & Pearce, 1972; Mishan, 1971; Quirin & Wiginton, 1981; Schofield, 1987; Sugden & Williams, 1978). This reply will briefly discuss these reasons in the context of the three types of decision making: single project accept/reject, the ranking of independent projects, and selection from mutually exclusive projects.

Advances in theoretical modeling of rapidly expanding atmospheres in the past few years made it possible to determine the stellar parameters of the Wolf-Rayet stars. This progress is mainly due to the improvement of the models with respect to their spatial extension: The new generation of models treat spherically-symmetric expanding atmospheres, i.e. the models are one-dimensional. Older models describe the wind by only one representative point. The older models are in fact ‘core-halo’ approximations. They have been introduced by Castor and van Blerkom (1970), and were extensively employed in the past (cf. e.g. Willis and Wilson, 1978; Smith and Willis, 1982). First results from new one-dimensional model calculations are published by Hillier (1984), Schmutz (1984), Hamann (1985), Hillier (1986), and Schmutz et al. (1987a); more detailed results are presented by Schmutz and Hamann (1986), Hamann and Schmutz (1987), Hillier (1987a,b), Wessolowski et al. (1987), Hillier (1987c) and Hamann et al. (1987). These results demonstrate that the step from zero- to one-dimensional calculations is essential. The important point is that the complicated interrelation between NLTE-level populations and radiation field is treated adequately (Schmutz and Hamann, 1986; Hillier, 1987). For this interrelation it is crucial to model consistently not only the line-formation region, but also the layers where the continuum is emitted. In fact, it is the core-halo approximation that causes the one-point models to fail in certain aspects.

1.1. Podemos decir, por experiencia, que el concepto enunciado en el documento «Estrategia para el desarrollo de las Sociedades Nacionales durante el decenio de 1980», nos ha servido como referencia para la preparación de nuestros planes generates 1980—1985, 1982—1986 y 1987—1990.1.2. Sin embargo, debemos destacar que, antes de la aprobación de dicho documento por la XXIV Conferencia Internacional de la Cruz Roja en Manila, el año 1981, ya se había considerado el tema en la XI Conferencia Interamericana en Río de Janeiro (Brasil, 1979), en la resolución n.° 4 con un documento titulado «Plan de desarrollo quinquenal de la Cruz Roja en América 1980—1984».

Agricultural productivity and Amazonian settlementThe nature of Pre-Columbian agricultural systems in Amazonia has stimulated considerable debate, specifically: can one or another cultigen — maize or manioc — provide a stable agricultural base for sedentism and population growth (eg. Carneiro 1961; 1986; Gross 1975; Meggers 1996; Roosevelt 1980)? Certain ecological factors are generally seen to limit production and intensification of those subsistence resources that can support sedentary or densely distributed populations. Low agricultural productivity, characteristic of many Amazonian soils, and the generally low density and patchy distribution of terrestrial game are commonly cited as limiting factors (Gross 1975; 1983; Johnson 1982; Meggers 1954; 1996; Ross 1978; Sponsel 1989). It has become accepted that the highly restricted váirzea regions, primarily the floodplain settings of the major ‘white-water’ rivers (the Amazon and its Andean-derived tributaries), did not impose these environmental constraints on demographic or economic growth due to their fertile soils and higher concentrations of rich aquatic resources (e.g. Brochado 1984; 1989; Carneiro 1986; 1995; Denevan 1996; Lathrap 1968; 1970; 1987; Lathrap et al. 1985; Meggers 1996; Moran 1993; Roosevelt 1980; 1989; 1994).

Opening ParagraphIn the literature and accumulated folk wisdom of development in rural Africa there are numerous instances of government projects which are expensive, ineffective and unpopular. These include now classic failures of the past, such as the Tanganyika Groundnuts Scheme (Wood, 1950; Frankel, 1953), which are still cited as cautionary tales demonstrating the need for proper project appraisal. There are also numerous more recent examples, for the phenomenon of failure has persisted and governments and international agencies continue to implement schemes ‘little better planned than their more spectacularly misbegotten predecessors’ (Hill, 1978: 25). Among recent initiatives in sub-Saharan Africa the large-scale irrigation projects developed in northern Nigeria during the 1970s have attracted particularly extensive adverse criticism. This has focused on the social and economic impact of the introduction of irrigation and particularly on questions of land tenure (inter alia Wallace, 1979, 1980, 1981; Oculi, 1981; Adams, 1982, 1984; Palmer-Jones, 1984; Andrae and Beckman, 1985; Beckman, 1986). A number of accounts discuss technical aspects of the land survey carried out at Bakolori {Bird, 1981, 1984, 1985; Griffith, 1984), while others focus on economic problems (e.g. Etuk and Abalu, 1982). However, although economic and technical aspects of these developments have been criticised, it is the social impacts of project development and more particularly the political responses to those impacts which are of greatest interest (Wallace, 1980; Adams, 1984; Andrae and Beckman, 1985; Beckman, 1986). This paper examines the bature of the response of farmers affected by one of these schemes, the Bakolori Project in Sokoto State.

Literacy underwent revolutionary growth in northwestern Europe during the seventeenth and eighteenth centuries. This revolution coincided with other dramatic changes in European society, such as the industrial, demographic, agricultural, political, and religious revolutions (Deane 1969: 20–84). While the relationships between literacy and these other revolutions are not fully understood, their association is apparent and many potential influences exist (Cipolla 1969; Cremin 1970; Graff 1981: 232–60; 1987a, 1987b; Jensen 1986: 114–28; Maynes 1985: 117–31; Mitch 1984, 1988; Sanderson 1983; West 1978). The transplantation of European society across the Atlantic brought the literacy revolution to the American periphery. While numerous studies have shown that colonial America participated in this expansion of literacy, the common longitudinal patterns of literacy growth across the various regions and populations of colonial America have received less attention.

Over the past decade a comprehensive, semiquantitative theoretical scenario for the final evolutionary stages of low and intermediate mass stars has been progressively elaborated and refined. It concerns the envelope ejection terminating the Asymptotic Giant Branch (AGB) phase, the AGB to Planetary Nebula (PN) transition, the fading and possible rejuvenation of PN nuclei, the formation processes of hydrogen-deficient stars, and the final production of white dwarfs (WD) of the DA and non-DA varieties (Renzini 1979, 1981a, 1981b, 1982, 1983, Iben & Renzini 1983, Iben et al. 1983, Iben 1984, 1985, 1987, Iben & Tutukov 1984, Iben & MacDonald 1985, 1986). In developing this scenario several important results of stellar evolution and hydrodynamical calculations have been incorporated, including in particular those of Paczynski (1971), Wood (1974), Härm & Schwarzschild (1975), Schönberner (1979, 1983), and Tuchman, Sack & Barkat (1979).

Structural studies of DNA-binding proteins and their complexes with DNA have proceeded at an accelerating pace in recent years due to important technical advances in molecular genetics, DNA synthesis, protein crystallography and nuclear magnetic resonance. The last major review on this subject by Pabo & Sauer (1984) summarized the structural and functional studies of the three sequence-specific DNA-binding proteins whose crystal structures were then known, the E. coli catabolite gene activator protein (CAP) (McKay & Steitz, 1981; McKay et al. 1982; Weber & Steitz, 1987), a cro repressor from phage λ (Anderson et al. 1981), and the DNA-binding proteolytic fragment of λcI repressor protein (Pabo & Lewis, 1982) Although crystallographic studies of the E. coli lac repressor protein were initiated as early as 1971 when it was the only regulatory protein available in sufficient quantities for structural studies (Steitz et al. 1974), little was established about the structural aspects of DNA-binding proteins until the structure of CAP was determined in 1980 followed shortly thereafter by the structure of λcro repressor and subsequently that of the λ repressor fragment. There are now determined at high resolution the crystal structures of seven prokaryotic gene regulatory proteins or fragments [CAP, λcro, λcI repressor fragment, 434 repressor fragment (Anderson et al. 1987), 434 cro repressor (Wolberger et al. 1988), E. coli trp repressor (Schevitz et al. 1985), E. coli met repressor (Rafferty et al. 1989)], EcoR I restriction endonuclease (McClarin et al. 1986), DNAse I (Suck & Ofner, 1986), the catalytic domain of γδ resolvase (Hatfull et al. 1989) and two sequence-independent double-stranded DNA-binding proteins [the Klenow fragment of E. coli DNA polymerase I (Ollis et al. 1985) and the E. coli Hu protein (Tanaka et al., 1984)].

Riparian ecosystems are among the most productive biological systems providing food, water, shade, and cover for wildlife (Thomas et al. 1979). Furthermore, they may display a greater diversity of plant and animal species and vegetative structure than adjacent ecosystems (USDI 1986). Previous investigators have sought to document rodent associations within riparian vegetation (Moor and Bradley 1975, Anderson et al. 1977, Boeer and Schmidly 1977, Gier and Best 1980, Paul 1981, Cross 1985, Doyle 1986, 1990, MacCraken et al. 1985, Anthony et al. 1987). Generally, these studies demonstrate that riparian habitats contain higher abundance and lower diversity of small mammal species when compared to adjacent upland sites or nearby sites which contained variable non-riparian habitats. Odum (1978) states that for wildlife populations, the riparian zone provides a classic example of the ecological pririciple of "edge effect". This effect is exerted by adjoining communities on the population structure within the ecotone which often contains greater numbers of species and higher densities of some species then either adjoining communities. He further states that density and diversity of species tend to be higher at the land-water ecotone than in adjacent communities. This relationship between edge effect and wildlife has not been well documented (Forman and Godron 1986) in part, because research has focused more on induced edges created by corridors than by patches (Yahner 1988).

The importance of feeding pattern is well documented in fish (Jenkins & Green, 1977; Simenstad & Cailliet, 1986) but there are not many reported studies in cephalopods. Feeding patterns, as defined by Jenkins & Green (1977) have been studied, to our knowledge, only in Todarodes pacificus (Okiyama, 1965), Loligo pealei (Vovk, 1972), Loligo opalescens (Karpov & Cailliet, 1978), Illex illecebrosus (Amaratunga et ah, 1979; Amaratunga, 1980) and Nototodarus gouldi (O'Sullivan & Cullen, 1983). Boyle (1983) dealt with aspects of feeding in several cephalopod species but not specifically with feeding pattern. Aspects of feeding in Sepia officinalis have been reviewed by Nixon (1987). The present work describes the daily feeding pattern in Sepia officinalis from data collected in the field.

SummaryA total of 6346 swine sera collected at an abattoir in the city of Obihiro, Hokkaido during the years 1978–87 were tested for the presence of antibodies to swine and human influenza viruses. A high incidence of antibody to A/New Jersey/8/76 (swine type H1N1) virus was observed throughout the 10 years except for the occasional month and a single long period of 15 months. Antibodies to human H3N2 virus in swine appeared to be related to the epidemics of human influenza which occurred in the study area during the years 1980–3, but unrelated to the epidemics during the years 1984–7. A large number of swine were found to be antibody positive to a human H1N1 virus during the period April to June 1964, and a smaller number, during the period November 1986 to June 1987. Both were in relation to human influenza epidemics. However, there were long periods where human H1N1 antibodies in swine could not be found.The first occurrence of swine influenza in Japan was recognized in 1977, when it was presumed that the disease was introduced via imported swine (Shibata elal. 1978). Further outbreaks of swine influenza and a high prevalence of antibody to the virus in Japanese swine populations have been reported by several workers (Yamane, Sukeno & Ishida, 1978; Sugimura elal. 1981; Ogawa elal. 1983). An outbreak of influenza virus infection due to an H3N2 strain was previously seen in a herd of swine in Osaka, Japan (Sugimura etal. 1975). Later the co-existence of swine (H1N1) and human (H3N2) influenza viruses was confirmed by serological and virological studies on Japanese swine populations (Onta et al. 1978; Sugimura et al. 1980; Arikawa et al. 1982). In a previous report (Miwa et al. 1986), we suggested that the swine became infected with a human H1N1 virus as piglets during an epidemic of influenza which occurred in the human population at the same time. The present study was undertaken to evaluate the changes in the prevalence of antibodies against swine and human influenza viruses in Japanese swine during the past 10 years.

During the past decade and a half, a great deal of research has posited a developmental sequence approach in second language acquisition. Much of this research has proposed that certain linguistic structures are acquired in a natural immutable order while other linguistic structures are acquired variably as a result of a learner's orientation (Clahsen, Meisel, & Pienemann, 1983; Meisel, Clahsen, & Pienemann, 1981; Pienemann, 1984, 1985, 1987; Pienemann & Johnston, 1987). Proposals have been made for extending the model into language assessment and pedagogy (Clahsen, 1985; Pienemann, 1984, 1992; Pienemann & Johnston, 1987). The present study reexamines the original social-psychological research upon which the multidimensional model is based and shows that it is incorrect due to faulty analyses. Further, it examines the limited applicability and generalizability of the developmental sequence approach for assessment and pedagogy.

Abundant examples of exoskeletal abnormalities have been known in various trilobites since Portlock's (1843) first report on a teratological pygidium of Phillipsia ornata (cf. Babcock, 2000). Owen (1985) and Babcock (1993) recognized three types of trilobite malformations: healed injuries, teratological conditions, and pathological conditions. It is not always easy, however, to distinguish between the various types of malformations, especially in case of teratological or pathological conditions. In general, healed injuries are considered to have resulted from trauma during molting (Walcott, 1883; Whittington, 1956; Henningsmoen, 1975; Snajdr, 1981; Owen, 1983; Ramsköld, 1984) or wounds by predatory attack (Ludvigsen, 1977; Rudkin, 1979; Ŝnajdr, 1979, 1981; Owen, 1985; Conway Morris and Jenkins, 1985; Babcock, 1993; Pratt, 1998). Many healed injuries are indicated by broken spine stumps, indented and cicatrized edges of exoskeletons, and callused or regenerated exoskeleton around the broken surface (Ŝnajdr, 1981; Owen, 1983; Babcock, 1993). Teratological conditions are represented primarily by the irregular development of glabellar lobes, cephalic borders, and pygidial border spines, and anomalous number of segments on the thorax and pygidium. For example, Owen (1980) described a teratological cranidium of Calyptaulax norvegicus with two additional lateral glabellar lobes between the l p and 2p lobes. On the other hand, pathological conditions are marked by gall-like swellings and vermiform borings on exoskeletons that are thought to have been caused by diseases or parasitic infestation (Lochman, 1941; Ŝnajdr, 1978; Conway Morris, 1981; Owen, 1985).

As far as phonology and morphology are concerned, the available evidence indicates that the role of L1 in shaping interlanguage is confined to those of its rules that are needed to account for its global alternations, alternations that are independent of its morphology (cf. Cearly 1974, Dressler 1985, Kilbury 1981, Singh and Ford 1982, 1987, Singh and Martohardjono 1989, Wode 1978, and Wurzel 1977, among others). The rules needed to account for the local, morphologically dependent alternations of L1 or the ones needed to account for its word-formation processes do not play such a role. Interference, in other words, can be caused only by across-the-board phonological rules of L1. So-called morphophonemic rules of L1 do not cause it, and morphological interference from L1 seems not to exist as word-formation errors in intermorphology are the results of illegal extensions of L2 word-formation rules (cf. Singh 1989 and Singh and Martohardjono 1989). The purpose of this note is to critically examine the accounts contemporary theories of phonology provide of this state of affairs and to argue that the account provided by the sort of theory proposed in Ford and Singh (1983, 1985a, 1985b) and Singh and Ford (1982, 1987) is the most satisfactory one.

This bibliography is a continuation of those published by Berry and Daniel (1984, 1985), Daniel (1981a, 1981b), Fulkerson and Wise (1987, 1990, 1992), Fulkerson, Wise, and Ancelet (1988), Johnson and Daniel (1974), Morgan and Daniel (1983), Mosely and Daniel (1982), and Wise and Fulkerson (1986, 1989, 1991). Search methods, criteria for inclusion, and other considerations were similar to those used previously. We have also continued the cumulative numbering practice of previous bibliographies. We included some pre-1992 citations not listed in previous bibliographies because we continue to terminate our search in June.

Cepheid variables in binaries are important from various points of view. These objects can in some cases provide direct information about the physical parameters of the system, can be used as tracers of stellar evolution, and the effect of the companions may influence the form of various relations (e.g. P-L-C, P-R) derived for Cepheids. While the first two advantages mentioned concern individual stars, the third involves the question of the frequency of binaries among the Cepheids. Systematic searches for binaries containing this kind of variable resulted in increasingly higher frequency of incidence: 2% (Abt 1959), 15% (Lloyd Evans 1968), >20% (Madore 1977), 25% (Pel 1978), 20%-40% (DeYoreo & Karp 1979), 35% (Madore & Fernie 1980). It was only in the early eighties that this trend ceased. The recent determinations of the incidence of binaries among the Cepheids are: 20%-40% (Gieren 1982), 18% (lower limit, Lloyd Evans 1982), 25% (Russo 1982), 25%-35% (Burki 1984). At the same time we have been going over to a qualitative era from the quantitative one, i.e. very thorough studies are now available on some individual cases of binary Cepheids (e.g. McNamara & Feltz 1981; Coulson 1983; Evans 1983; Bohm-Vitense et al. 1984).

Nous pouvons dire, par expérience, que le concept énoncé dans le document «Stratégie pour le développement des Sociétés nationales pour les années 1980»1 nous a servi de référence dans la préparation de nos plans généraux pour 1980–1985, 1982–1986 et 1987–1990.

Pentachlorophenol is used as an industrial wood preservative for utility poles, crossarms, fence posts, and other purposes (79%);for NaPCP (12%); and miscellaneous, including mill uses, consumer wood preserving formulations and herbicide intermediate (9%) (CMR, 1980). As a wood preservative, pentachlorophenol acts as both a fungicide and insecticide (Freiter, 1978). The miscellaneous mill uses primarily involve the application of pentachlorophenol as a slime reducer in paper and pulp milling and may constitute ∼6% of the total annual consumption of pentachlorophenol (Crosby et al., 1981). Sodium pentachlorophenate (NaPCP) is also used as an antifungal and antibacterial agent (Freiter, 1978). Pentachlorophenol also is used as a general herbicide (Martin and Worthing, 1977). Photolysis and microbial degradation are the important chemical removal mechanisms for pentachlorophenol in water. In surface waters, pentachlorophenol photolyzes rapidly (ECETOC, 1984; Wong and Crosby. 1981; Zepp et al., 1984); however, the photolytic rate decreases as the depth in water increases (Pignatello et al., 1983). Pentachlorophenol is readily biodegradable in the presence of accli-mated microorganisms; however, biodegradation in natural waters requires the presence of microbes that can become acclimated. A natural river water that had been receiving domestic and industrial effluents significantly biodegraded pentachlorophenol after a 15-day lag period, while an unpolluted natural river water was unable to biodegrade the compound (Banerjee et al., 1984). Even though pentachlorophenol is in ionized form in natural waters, sorption to organic particulate matter and sediments can occur (Schellenberg et al., 1984), with desorption contributing as a continuing source of pollution in a contaminated environment (Pierce and Victor, 1978). Experimentally determined BCFs have shown that pentachlorophenol can significantly accumulate in aquatic organisms (Gluth et al., 1985; Butte et al., 1985; Statham et al., 1976; Veith et al., 1979a,b; Ernst and Weber, 1978), which is consistent with its widespread detection in fish and other organisms. Direct photolysis may be an important environmental sink for pen tachlorophenol present in the atmosphere. The detection of pen tachlorophenol in snow and rain water (Paasivirta et al., 1985; Bevenue et al., 1972) suggests that removal from air by dissolution is possible. Soil degradation studies indicate that pentachlorophenol is biodegrad able; microbial decomposition is an important and potentially domin ant removal mechanism in soil (Baker et al., 1980; Baker and Mayfield, 1980; Edgehill and Finn, 1983; Kirsch and Etzel, 1973; Ahlborg and Thunberg, 1980). The degree to which pentachlorophenol leaches in soil is dependent on the type of soil. In soils of neutral pH, leaching may be significant, but in acidic soils, adsorption to soil generally increases (Callahan et al. , 1979; Sanborn et al. , 1977). The ionized form of pentachlorophenol may be susceptible to adsorption in some soils (Schellenberg et al., 1984). In laboratory soils, pen tachlorophenol decomposes faster in soils of high organic content as compared with low organic content, and faster when moisture content is high and the temperature is conducive to microbial activity. Half- lives are usually ∼2-4 weeks (Crosby et al., 1981). Monitoring studies have confirmed the widespread occurrence of pentachlorophenol in surface waters, groundwater, drinking water and industrial effluents (see Table 2). The U.S. EPA's National Urban Runoff Program and National Organic Monitoring Survey reported frequent detections in storm water runoff and public water supplies (Cole et al., 1984; Mello, 1978). Primary sources by which pen tachlorophenol may be emitted to environmental waters may be through its use in wood preservation and the associated effluents and its pesticidal applications. Pentachlorophenol can be emitted to the atmosphere by evaporation from treated wood or water surfaces, by releases from cooling towers using pentachlorophenol biocides or by incineration of treated wood (Skow et al., 1980; Crosby et al., 1981). Pentachlorophenol has been detected in ambient atmospheres (Caut reels et al., 1977), in snow and rain water (Paasivirta et al,. 1985; Bevenue et al., 1972) and in emissions from hazardous waste incinera tion (Oberg et al., 1985). The U.S. Food and Drug Administration's Total Diet Study (conducted between 1964 and 1977) found pen tachlorophenol residues in 91/4428 ready-to-eat food composites (See Tables 4 and 5). The average American dietary intake of pen tachlorophenol during 1965-1969 was estimated to range from <0.001-0.006 mg/day (Duggan and Corneliussen, 1972). The most likely source of pentachlorophenol contamination in many food prod ucts may be the exposure of the food to pentachlorophenol-treated wood materials such as storage containers (Dougherty, 1978). Acute toxicity data indicated that salmonids are more sensitive to the toxic effects of pentachlorophenol than other fish species, with LC50 values of 34-128 μ g/l for salmonids and 60-600 μ g/l for other species. More recent data showed that carp larvae, bluegills, channel catfish and knifefish also had LC50 values < 100 μ gl (see Table 10). The most sensitive marine fishes were pinfish larvae, the goby, Gobius minutus, and eggs and larvae of the flounder, Pleuronectes platessa, all with LC50 values <100 μ g/l (Adema and Vink, 1981). The most sensitive freshwater invertebrate species were the chironomid, Chironomus gr. thummi (Slooff, 1983) and the snail, Lymnaea luteola (Gupta et al., 1984). The most sensitive marine invertebrates were the Eastern oyster (Borthwick and Schimmel, 1978), larvae of the crusta ceans, Crangon crangon and Palaemon elegans (VanDijk et al. , 1977), and the copepod, Pseudodiaptomus coronatus (Hauch et al., 1980), all with LC50 values <200 μ g/l. In chronic toxicity tests, the lowest concentration reported to cause adverse effects was 1.8 μ g/l (NaPCP), which inhibited growth of sockeye salmon (Webb and Brett, 1973). The marine species tested displayed similar thresholds for chronic toxicity. Both acute and chronic toxicity increased at lower pH, probably because a lower pH favors the un-ionized form of pentachlorophenol, which is taken up more readily and is therefore more toxic than ionized pentachlorophenol (Kobayashi and Kishino, 1980; Spehar et al., 1985). Data concerning the effects of pentachlorophenol on aquatic plants were highly variable. Therefore, it was difficult to draw conclusions from these data. Pentachlorophenol did not appear to bioaccumulate in aquatic or ganisms to very high concentrations. BCFs for pentachlorophenol were <1000 for most species tested. The highest BCF was 3830 for the polychaete, Lanice conchilega (Ernst, 1979). Some species appear to have an inducible pentachlorophenol-detoxification mechanism, as evidenced in several experiments in which pentachlorophenol tissue levels peaked in 4-8 days and declined thereafter despite continued exposure (Pruitt et al., 1977; Trujillo et al., 1982). A study by Niimi and Cho (1983) indicated that uptake of waterborne pentachlorophenol from gills was much greater than uptake from food, indicating that bioconcentration of pentachlorophenol through the food chain is unlikely. Biomonitoring data of Lake Ontario fishes showed that similar pentachlorophenol levels were found in predators andforage species. Studies with experimental ecosystems have indicated that ecological effects may occur at pentachlorophenol levels as low as those causing chronic toxicity in sensitive species in single-species tests. The lowest concentration that caused adverse effects in these studies was 15.8 μ g/l, which caused a reduction in numbers of individuals and species in a marine benthic community (Tagatz et al., 1978). Pentachlorophenol is readily absorbed from the gastrointestinal tract of rats, mice, monkeys and humans (Braun et al. , 1977, 1978; Ahlborg et al., 1974; Braun and Sauerhoff, 1976). Peak plasma concentrations are reached within 12-24 hours after oral administration to monkeys (Braun and Sauerhoff, 1976), but 4-6 hours after oral administration to rats (Braun et al., 1977). After oral administration, the highest concentration of radioactivity was found in the liver and gastrointesti nal tract of monkeys (Braun et al., 1977). In rats and mice, tet rachlorohydroquinone was identified in the urine (Jakobson and Yllner, 1971; Braun et al., 1977; Ahlborg et al., 1974) as well as unmetabolized pentachlorophenol and glucuronide-conjugated pen tachlorophenol. Although Ahlborg et al. (1974) reported that oxidative dechlorination of pentachlorophenol occurs in humans, as evidenced by the presence of tetrachlorohydroquinone in the urine of workers occupationally exposed (probably by inhalation), analysis of human urine after ingestion of pentachlorophenol revealed the presence of conjugated pentachlorophenol and unmetabolized pentachlorophenol (Braun et al., 1978). The primary route of excretion after oral administrtation of all species studied is in the urine (Braun et al. , 1977, 1978; Ahlborg et al., 1974; Larsen et al., 1972; Braun and Sauerhoff, 1976). Although urinary excretion followed second-order kinetics in rats (Larsen et al., 1972; Braun et al., 1977) except in females receiving a single high dose (100 mg/kg) of pentachlorophenol, urinary excretion of pentachlorophenol in humans and monkeys followed first-order kinetics (Braun and Sauerhoff, 1976; Braun et al., 1978). Enterohepatic circulation played an importation role in the pharmacokinetics of pen tachlorophenol. The half-life of pentachlorophenol in the plasma is longer in female rats and monkeys than it is in male rats and monkeys (Braun et al. , 1978; Braun and Sauerhoff, 1976). Because many preparations of pentachlorophenol are contaminated with small but measurable amounts of highly toxic substances, such as dibenzodioxins, special attention must be paid to the composition of the pentachlorophenol solution tested. In studies where technical and purified pentachlorophenol have been evaluated (Schwetz et al., 1974; Goldstein et al., 1977; Kimbrough and Linder, 1978; Knudsen et al., 1974; Johnson et al., 1973; Kerkvliet et al., 1982), only the results of the experiments using purified pentachlorophenol were reported in detail. Oral exposure to pentachlorophenol was not carcinogenic in mice (BRL, 1968; Innes et al., 1969) or rats (Schwetz et al., 1977), regardless of the composition of the pentachlorophenol solution tested. Although there are a few studies that suggest pentachlorophenol may be mutagenic in B. subtilis (Waters et al., 1982; Shirasu, 1976), in yeast, Saccharomyces cerevisiae (Fahrig et al., 1977) and in mice, as evidenced by the coat-color spot test (Fahrig et al., 1977), no evidence of mutagenicity was reported in S. typhimurium (Anderson et al. , 1972; Simmon et al., 1977; Lemma and Ames, 1975; Moriya et al. , 1983; Waters et al., 1982; Buselmaier et al., 1973) or in E. coli (Simmon et al., 1977; Fahrig, 1974; Moriya et al., 1983; Waters et al., 1982) with or without metabolic activation. Three teratogenicitylreproductive toxicity studies (Schwetz et al., 1974, 1977; Courtney et al., 1976) indicate that pentachlorophenol is fetotoxic in rats at oral dose levels ≥5 mg/kg/day. At the highest dose tested (500 ppm) in a fourth teratogenicity/reproductive toxicity study (Exon and Koller, 1982), there was a statistically nonsignificant decrease in litter size. The lowest dose tested (5 mg/kg/day) by Schwetz et al. (1977) was the lowest dose at which any evidence offetotoxicity, as indicated by delayed ossification, was observed. No adverse fetal or reproductive effects were reported at ≤3 mg/kg/day (Schwetz et al., 1977; Exon and Koller, 1982). In subchronic and chronic toxicity studies, adverse effects occurred primarily in the liver (Kerkvliet et al., 1982; Johnson et al., 1973; Knudsen et al. , 1974; Goldstein et al. , 1977; Kimbrough and Linder, 1978; Schwetz et al., 1977), the kidney (Johnson et al., 1973; Kimbrough and Linder, 1978; Schwetz et al., 1977) and the immune system (Kerkvliet et al., 1982). Knudsen et al. (1974) reported increased liver weights in female rats and centrilobu lar vacuolization in male rats exposed to diets containing ≧50 ppm commercial pentachlorophenol, which contained 282 ppm dioxins. In the remaining studies, increased liver weight (Johnson et al., 1973) and increased pigmentation of hepatocytes (Schwetz et al., 1977) were observed at oral doses of≥10 mg/kg/day (∼90%), and SGPT levels significantly increased in rats ingesting 30 mg/kg/day pentachloro phenol (∼90%) for 2 years (Schwetz et al., 1977). Increased kidney weight unaccompanied by renal histopathology was reported in rats exposed to dietary concentration ≧20 ppm of pentachlorophenol (>99%) for 8 months (Kimbrough and Linder, 1978) and in rats ingesting 30 mg/kg/day (∼90%) for 90 days (Johnson et al., 1973). Increased pigmentation of the renal tubular epithelial cells was re ported in rats ingesting 10 or 30 mg/kg/day pentachlorophenol for 2 years (Schwetz et al., 1977). Although decreased immunocompetence was reported in mice exposed to dietary levels of 50 or 500 ppm of pentachlorophenol (>99%) for 34 weeks (Kerkvliet et al., 1982), the decrease was statistically significant only at the higher dose. An ADI of 0.03 mg/kg/day or 2.1 mg/day for a 70 kg human was derivedfrom the NOAEL of 3 mg/kg/day in rats in the chronic dietary study by Schwetz et al. (1977). An uncertainty factor of 100 was used. An RQ of 100 was derived based on the fetotoxic effects of pen tachlorophenol in rats in the study by Schwetz et al. (1974). Based on guidelines for carcinogen risk assessment (U.S. EPA, 1984b) and inadequate evidence for animal carcinogenicity or absence of human cancer data, pentachlorophenol is classified as Group D, meaning that it is not classified as a human carcinogen.

The effect of either burning stubble, or incorporating it in the soil, on the nitrogen (N) fertiliser requirement of the following wheat crop was examined over 10 years (1978-87) in a continuous wheat system at 2 sites (Wongan Hills and Nabawa), and in both continuous wheat and wheat-fallow systems at one site (Merredin). There were significant grain yield increases in response to N fertiliser in all years at Nabawa. At Wongan Hills there was no response in 1978 and 1985, a yield reduction in 1979, and a yield increase in all other years. At Merredin, there was no response in 1980, a yield decrease in 1984 and 1985, and an increase in all other years. In some years grain yield responses were small at Wongan Hills and Merredin. The only significant overall effects of stubble treatment were at Nabawa in 1978 (P<0.01) and 1985 (P<0.05). The interaction between stubble treatment and N rate was significant at Wongan Hills in 1980 and 1981 (P<0.05), and at Merredin in 1981 (P<0.001), 1983, and 1985 (both P<0.05). Response to N fertiliser was higher where the stubble was incorporated than where it was burnt. There was also a tendency for higher optimum economic rates of N fertiliser with stubble incorporated rather than burnt, but differences were not large. At Merredin, the overall yield increase with fallow was significant (P<0.001) in 1979 and 1983. The fallow x N fertiliser rate interaction was significant in all comparison years except 1987. Responses to N were greater in the non-fallow treatments. Soil organic carbon (C) levels were higher with stubble incorporation than where the stubble was burnt, and fallowing resulted in lower organic C. There was a downward trend with time, especially when fallowing was carried out. Effects on total N levels in the soil were similar to those for organic C but were less marked. The study indicates that at a level of stubble residues of 1-3 t/ha with continuous wheat in this winter rainfall environment in Western Australia, stubble treatment is unlikely to be a major factor in determining the rate of N fertiliser required for a wheat crop.

Medusae are common constituents of the meso-and bathypelagic fauna. Small, transparent trachyline hydromedusae are usually most abundant, but the larger (2–10 cm diameter) pigmented coronate scyphomedusae are often collected in trawl nets (Thurston, 1977; Roe, James & Thurston, 1984; Larson, 1986) or observed from submersibles (Mackie & Mills, 1983; Mackie, 1985; Larson, Madin & Harbison, unpublished observations). Larger (30–70 cm) deep-sea semaeostome scyphomedusae are only infrequently collected in nets (Harbison, Smith & Backus, 1973; Larson, 1986), and would appear to be the rarest forms. For example, Thurston (1977) collected over 16000 midwater medusae in trawls yet he did not report taking a single mesopelagic semaeostome. However, recent investigations using submersibles have shown that these medusae are much more common than net hauls alone would suggest (Smith, 1982).

Five subfamilies, 11 genera and 77 species of Dryinidae are listed from Guangdong Province. Two new species, Anteonpteromaculatum Xu, Olmi, Guglielmino & Chen, sp. nov. and Dryinus nanlingensis Xu, Olmi, Guglielmino & Chen, sp.nov. are described from Nanling National Nature Reserve. New synonymies are proposed for Dryinus indicus (Kieffer,1914) (=Chlorodryinus koreanus Móczár, 1983, syn. nov.; Dryinus masneri Olmi, 2009, syn. nov.), Gonatopus nearcticus(Fenton, 1927) (=Acrodontochelys sinensis Olmi, 1984, syn. nov.). Ten species, Anteon atrum Olmi, 1998, A. silvicolumOlmi, 1984, A. viraktamathi Olmi, 1987, Deinodryinus asiaticus Olmi, 1984, Dryinus krombeini Ponomarenko, 1981,Neodryinus sumatranus Enderlein, 1907, Gonatopus malesiae (Olmi, 1984), Gonatopus validus (Olmi, 1984), G. plebeius(Perkins, 1912), and G. asiaticus (Olmi, 1984) are newly recorded from China. Anteon nanlingense Xu, Olmi & He, 2011is newly recorded from Indonesia. Twenty-seven species are newly recorded from Guangdong Province. Ten species, including new ones, are known from Guangdong Province only.

The most serious recent work on the theory of coordination has probably been done in terms of three theories of grammatical structure: Generalized Phrase Structure Grammar (GPSG–see especially Gazdar, 1981; Gazdaret al., 1982; 1985; Saget al., 1985; Schachter & Mordechay, 1983), Categorial Grammar (CG–see especially Steedman, 1985; Dowty, 1985) and Transformational Grammar (TG–notably Williams, 1978, 1981; Neijt, 1979; van Oirsouw, 1985, 1987). Each of these approaches is different in important respects: for instance, according to whether or not they allow deletion rules, and according to the kinds of information which they allow to be encoded in syntactic features. However, behind these differences lies an important similarity: in each case the theory concerned makes two assumptions about grammatical structure in general (i.e. about all structures, including coordinate ones):I The basic syntagmatic relations in sentence-structure are part-whole relations (consituent structure) and temporal order; note that this is true whether or not syntactic structure is seen as a ‘projection’ of lexical properties, since these lexical properies are themselves defined in terms of constituent structure and temporal order.

Considerable progress has been made over the last few years in the study of the cosmologica! evolution of radio sources, both regarding the collection of deeper and higher quality observations and towards a better understanding of the physical processes that may cause the epoch dependent properties of the radio source populations on cosmological timescales. In this review it is attempted to give a fair coverage to the work of all groups that made relevant contributions to this field since 1981. A few very important papers from before 1980, that were not dealt with by the previous IAD commission, are covered as well. For more detailed reviews we refer to Katgert (1980), Kellerman (1980), van der Laan and Windhorst (1982), van der Laan et al. (1983), Longair (1978), Wall and Benn (1982), Wall (1983) and Windhorst (1984). Le latter review is a more detailed version of the current report to IAU commission 47 on Cosmology.

This report summarises the principal results of a six-week study of some critical areas in Ivisârtoq (part of the Ivisârtoq region, 65 V. 2 Nord; fig. 1) by a two-man expedition (the writer and his undergraduate assistant) during the summer of 1985, a period of exceptionally good weather. Our objective was to complete the field programme of a team from the University of Exeter (Chadwick et al., 1983; Brewer et al., 1984) which had been seriously disrupted by bad weather in 1983. The main thrust of the field work in 1985 was to investigate the geometry of the late Archaean system of dornes of gneisses and intervening synclinal cusps of Malene supracrustal rocks which dominates the structure of Ivisârtoq (figs 1,2). The fjeld mapping revealed important new details, not only of the structure but also of the Malene stratigraphy and the emplacement of granitic and basaltic magmas during the development of the system of dornes and synclines. Systematic geological investigations in the Ivisårtoq region began in 1976 (Allaart et al., 1977) and important contributions have been made by Hall & Friend (1979, 1983), Hall (1980, 1981) and Friend et al. (1981). Some preliminary results of investigations by the Exeter team have been reported by Brewer et al. (1984), Chadwick (1985), and Coe & Robertson (1984). Details of isotopic ages and petrogenesis of the gneisses and late Arehaean granites have been reported by Robertson (1985, in press).

Within the expanding framework of non-linear morphology, no wordformation process has sparked more interest than reduplication. Once relegated to a secondary status with a few examples, reduplication has now arrived centre stage as a testing ground for alternative theories of multitiered morphology and phonology. The innovative work of McCarthy (1981) and Marantz (1982) on this subject has laid the groundwork for subsequent formal treatments of reduplication, including Levin (1983), Broselow & McCarthy (1984), Clements (1985), Odden & Odden (1985), Schlindwein (1986, 1988), McCarthy & Prince (forthcoming), Kiparsky (1986), Mester (1986) and Steriade (1988), among others. These varying accounts of reduplication have been tested against a large and growing body of data from most parts of the world. Surprising to us, however, since every Bantu language we are familiar with has one or more reduplicative processes, relatively little attention has been focused on this rather large linguistic group of several hundred languages coverin a major part of the African continent.

Upland floras (Chaloner, 1958), clastic substrate inhabitors (Dimichele et al., 1985), extrabasinal floras (Pfefferkorn, 1980), dryland floras (Havlena, 1960), seamforming Flöznahe and more distant Flözfremde (Daber, 1959; Havlena, 1961) mesophilous and xerophilous floras (Havlena, 1971), Callipteris-Walchia assemblage (Gothan and Gimm, 1930; Gothan and Remy, 1957), Megalopteris-Cordaites assemblage (Cross, 1977; Leary, 1981; Read and Mamay, 1964), Gigantopteris flora and Callipteris flora (Read and Mamay, 1964), early Permian floras (White, 1934), roof nodule floras (Stopes and Watson, 1907), the Mesophytic flora (Frederiksen, 1972), and “Permian” aspect (Elias, 1936a,b), are some of the terms that have been devised in recognition of the observation that many Late Paleozoic plant communities did not form coal swamp peats and their vegetational composition changed in response to global tectonism. The peat swamps clearly changed floral composition through time (Phillips, et al., 1974; Phillips, 1981; Dapples and Hopkins, 1969), but can be reasonably easily characterized, because “coal” swamp plants were commonly deposited in situ, or very near their sites of growth.

In many ways, it is presumptuous for me to speak on the mosses of the tropical regions of China. Many consider the knowledge about the taxonomy, ecology, and geography of tropical bryophytes inadequate (Pócs 1982; Schuster 1983; Richards 1984), and this is certainly the case for the bryophytes of the tropical regions of China. The taxonomy of Chinese taxa is generally in a state of disarray. Early workers, both Chinese and others, have tended to describe new species based upon minor or inconsequential morphological characters and without apparent reference to related taxa found outside of China. This is clear from recent monographic studies that compared Chinese taxa with taxa throughout the world. For example, Su (1988) in his studies of Homaliodendron reduced the taxa of this genus for southeast Asia from over eighteen to four. Similar synonymizing has occurred in Forsstroemia (Stark 1987), Mniaceae (Koponen 1981), Grimmia and Schistidum (Cao & Vitt 1986) and the Calymperaceae (Lin & Reese 1989). Furthermore, monographers of groups have not always been able to study adequate collections from China as for example, Noguchi’s (1976) revision of the Meteoriaceae or Nyholm’s (1971) studies on the genus Atrichum. Even recent monographic or revisionary studies such as those on Leucodon (Akiyama 1988), Trachyloma (Miller & Manuel 1982), Glossadelphus (Tixier 1988), Entodon (Hu 1983), Ctenidium (Nishimura 1985), Forsstroemia (Stark 1987), Gollania (Higuchi 1985) or Fissidens (Li 1985) appear to have had only those collections from China for study that were available in herbaria outside of China. The cause for this probably rests with the difficulty of borrowing material from Chinese herbaria. Even when specimens are loaned by Chinese herbaria the borrower gets only a small sample of what may be present. Herbaria I have visited in China have huge backlogs of unprocessed or unidentified collections. In many cases these collections come from significant regions such as western Sichuan, Yunnan and the tropical regions of Xizang (Tibet).

Large woody debris (LWD) plays a key role in controlling the ecology and geomorphology of streams. Woody debris traps coarse particulate organic matter and sediments (Andersen and Sedell, 1979; Bilby and Likens, 1980; Marston, 1982); provides habitat for aquatic insects (Angermeier and Karr, 1984; Benke et al., 1985); and provides cover in pools and slow water areas (Bisson et al., 1982, 1987; Tschaplinski and Hartman, 1983; Fausch and Northcote, 1992). The role of wood in affecting stream morphology is dependent on the size of the stream (Bilby and Ward, 1989). In smaller streams, woody debris can create step pool sequences (Heede, 1972, 1985; Marston, 1982), increase pool area (Murphy and Hall, 1981; Ralph et al., 1994), and reduce sediment transport (Bilby, 1984). Nakamura and Swanson (1993) noted that the importance of woody debris to the morphology of first order streams can be limited by the size of the debris, which is often large enough to bridge the channel and not interact with the flow. Woody debris plays a larger role when it enters the channel bottom, where it can divert flow and affect erosion and deposition. The scale issues raised by Bilby and Ward (1989) and Nakamura and Swanson (1993) are critical to understanding the role of woody debris. To date, LWD has not been adequately studied at watershed scales in larger rivers. In fact, there is little understanding of the relationship between LWD and the geomorphic pattern of the river channel (Piegay and Marston, 1998; Piegay and Gumell, 1997; Piegay, 1993). The purpose of this study is to document the distribution of LWD jams on the Snake River in Grand Teton National Park, Wyoming in order to understand the effects of LWD on channel morphology in large river systems.

Social mobility has long been viewed as an integrative mechanism for societies. For example, whereas earlier American researchers saw opportunities for social mobility as a vital factor in promoting political stability and the maximisation of equality of opportunity, more recent British sociologists have noted the role of social mobility in legitimising inequalities and impeding class formation and class action. Despite this stress on the importance of social mobility for societal stability, however, there has been little sustained empirical study of the influence of marital homogany either in terms of societal integration or the reproduction of class relations. Yet, as Jones (1987) notes, this neglect of the issue is somewhat puzzling. Not only have earlier studies of class phenomena such as Sorokin (1927) and Schumpeter (1951) paid considerable attention to marriage and the family in relation to social stability, class formation and class cohesion, but, marital patterns, in terms of the economic and social resources of parents, are consistently emphasised as one vital factor in accounting for the subsequent occupational achievements of children (Hayes and Miller, 1991; Miller and Hayes, 1990; Abbott and Sapsford, 1987; Boyd, 1985; Dale et.al., 1985; Cooney et.al., 1982; Marini, 1980) and the political attitudes of households in general (Leiulfsrud and Woodward, 1988, 1987; Abbott, 1987; Britten, 1984).

When a phonological rule applies across words, it is necessary to be able to specify across which types of words it may apply and across which it may not, or in other words, within which domain it applies. That such domains do not necessarily coincide with syntactic constituents has been amply demonstrated in such works as Clements (1978), Napoli & Nespor (1979), Rotenberg (1978), Selkirk (1978, 1984), Nespor & Vogel (1982, 1986) and Kaisse (1985). As has been argued in recent work, what is needed instead is a somewhat more complex theory in which there is a more complex type of interaction between phonological rules and syntactic structures. In the past few years, several such theories have been proposed, in particular, those advanced by Selkirk (1984), Kaisse (1985) and Nespor & Vogel (1986).

This bibliography is a continuation of those published by Berry and Daniel (1984, 1985), Daniel (1981a, 1981b), Fulkerson and Wise (1987, 1990), Fulkerson, Wise, and Ancelet (1988), Johnson and Daniel (1974), Morgan and Daniel (1983), Mosley and Daniel (1982), and Wise and Fulkerson (1986, 1989). Search methods, criteria for inclusion, and other considerations were similar to those used previously. We have also continued the cumulative numbering practice of previous bibliographies. We have included a number of pre-1990 citations not listed in previous bibliographies because we continue to terminate our search in June. A noteworthy observation about this year's bibliography concerns the increase in the number of articles reporting research on college teaching in general and on the education of women, minorities, and nontraditional students in particular.

One of the most luminous stars in our Galaxy (Humphreys 1988) HR 8752 = HD 217476 (G0 Ia), is similar in some respects to Luminous Blue Variables. Studies by several authors (Sargent 1965; Smoliński 1971; Smoliński et al. 1977; Stickland and Harmer 1978; Lambert and Luck 1978; Lambert et al. 1981; Smoliński et al. 1986; Sheffer and Lambert 1987) have contributed to the understanding of activities in the atmosphere of this star, but its nature is still not well understood.

An ongoing study of the ambrosia beetle tribe Xyleborini has resulted in numerous taxonomic changes mostly representing new generic/species combinations which remove species from the once all-encompassing Xyleborus Eichhoff, 1864 to other genera based on revised taxonomic concepts. These changes are here listed. Terminalinus Hopkins, 1915 is removed from synonymy with Cyclorhipidion Hagedorn, 1912 and reinstated as a valid genus. Five species are removed from synonymy and reinstated as valid species: Amasa brevipennis (Schedl, 1971), Amasa fulgens (Schedl, 1975), Ambrosiophilus immitatrix (Schedl, 1975), Ambrosiophilus semirufus (Schedl, 1959), Microperus leprosulus (Schedl, 1936). The following 97 new or restored combinations are proposed: Ambrosiophilus bispinosulus (Schedl, 1961) comb. nov., Ambrosiophilus compressus (Lea, 1894) comb. nov., Ambrosiophilus latecompressus (Schedl, 1936) comb. nov., Ambrosiophilus pertortuosus (Schedl, 1942) comb. nov., Ambrosiophilus tomicoides (Eggers, 1923) comb. nov., Ambrosiophilus tortuosus (Schedl, 1942) comb. nov., Euwallacea obliquecauda (Motschulsky, 1863) comb. nov., all from Ambrosiodmus Hopkins, 1915; Coptodryas decepta (Schedl, 1979) comb. nov., Microperus pusillus (Eggers, 1927) comb. nov., both from Arixyleborus Hopkins, 1915; Coptodryas pseudopunctula (Schedl, 1942) comb. nov., from Cnestus Sampson, 1911; Microperus abbreviatus (Schedl, 1942) comb. nov., Microperus amphicauda (Browne, 1986) comb. nov., Microperus borneensis (Browne, 1986) comb. nov., Microperus comptus (Sampson, 1919) comb. nov., Microperus gorontalosus (Schedl, 1939) comb. nov., Microperus pullus (Schedl, 1952) comb. nov., Microperus tenellus (Schedl, 1959) comb. nov., Microperus vafer Schedl, 1957 comb. nov., all from Coptodryas Hopkins, 1915; Ambrosiophilus pityogenes (Schedl, 1936) comb. nov., Arixyleborus scapularis (Schedl, 1942) comb. nov., Beaverium dihingicum (Wood, 1992) comb. nov., Beaverium rufonitidus (Schedl, 1951) comb. nov., Coptodryas brevior (Eggers) comb. nov., Terminalinus dipterocarpi Hopkins, 1915 comb. res., Terminalinus sexspinatus (Schedl, 1935) comb. nov., Terminalinus terminaliae (Hopkins, 1915) comb. res., Truncaudum leverensis (Browne, 1986) comb. nov., all from Cyclorhipidion Hagedorn, 1912; Planiculus kororensis (Wood, 1960) comb. nov., Planiculus loricatus (Schedl, 1933) comb. nov., Planiculus murudensis (Browne, 1965) comb. nov., all from Euwallacea Reitter, 1915; Terminalinus anisopterae (Browne, 1983) comb. nov., Terminalinus indigens (Schedl, 1955) comb. nov., Terminalinus macropterus (Schedl, 1935) comb. nov., Terminalinus major (Stebbing, 1909) comb. nov., Terminalinus pilifer (Eggers, 1923) comb. nov., Terminalinus posticepilosus (Schedl, 1951) comb. res., Terminalinus pseudopilifer (Schedl, 1936) comb. nov., Terminalinus sulcinoides (Schedl, 1974) comb. nov., all from Fortiborus Hulcr & Cognato, 2010; Microperus micrographus (Schedl, 1958) comb. nov., Microperus truncatipennis (Schedl, 1961) comb. nov., both from Xyleborinus Reitter, 1913; Ambrosiophilus immitatrix (Schedl, 1975) comb. nov., Ambrosiophilus semirufus (Schedl, 1959) comb. nov., Arixyleborus crenulatus (Eggers, 1920) comb. nov., Arixyleborus strombosiopsis (Schedl, 1957) comb. nov., Beaverium batoensis (Eggers, 1923) comb. nov., Beaverium calvus (Schedl, 1942) comb. nov., Beaverium obstipus (Schedl, 1935) comb. nov., Beaverium rufus (Schedl, 1951) comb. nov., Coptodryas cuneola (Eggers, 1927) comb. nov., Cyclorhipidion amanicum (Hagedorn, 1910) comb. nov., Cyclorhipidion impar (Eggers, 1927) comb. nov., Cyclorhipidion inaequale (Schedl, 1934) comb. nov., Cyclorhipidion kajangensis (Schedl, 1942) comb. nov., Cyclorhipidion obiensis (Browne, 1980) comb. nov., Cyclorhipidion obtusatum (Schedl, 1972) comb. nov., Cyclorhipidion perpunctatum (Schedl, 1971) comb. nov., Cyclorhipidion repositum (Schedl) comb. nov., Cyclorhipidion separandum (Schedl, 1971) comb. nov., Debus abscissus (Browne, 1974) comb. nov., Debus amplexicauda (Hagedorn, 1910) comb. nov., Debus armillatus (Schedl, 1933) comb. nov., Debus balbalanus (Eggers 1927) comb. nov., Debus blandus (Schedl, 1954) comb. nov., Debus cavatus (Browne, 1980) comb. nov., Debus cylindromorphus (Eggers, 1927) comb. nov., Debus dentatus (Blandford, 1895) comb. nov., Debus excavus (Schedl, 1964) comb. nov., Debus fischeri (Hagedorn, 1908) comb. nov., Debus hatanakai (Browne, 1983) comb. nov., Debus insitivus (Schedl, 1959) comb. nov., Debus persimilis (Eggers, 1927) comb. nov., Debus subdentatus (Browne, 1974) comb. nov., Debus trispinatus (Browne, 1981) comb. nov., Diuncus taxicornis (Schedl, 1971) comb. nov., Euwallacea agathis (Browne, 1984) comb. nov., Euwallacea assimilis (Eggers, 1927) comb. nov., Euwallacea bryanti (Sampson, 1919) comb. nov., Euwallacea latecarinatus (Schedl, 1936) comb. nov., Euwallacea pseudorudis (Schedl, 1951) comb. nov., Euwallacea semipolitus (Schedl, 1951) comb. nov., Euwallacea temetiuicus (Beeson, 1935) comb. nov., Immanus duploarmatus (Browne, 1962) comb. nov., Leptoxyleborus sublinearis (Eggers, 1940) comb. nov., Peridryocoetes pinguis (Browne, 1983) (Dryocoetini) comb. nov., Stictodex halli (Schedl, 1954) comb. nov., Stictodex rimulosus (Schedl, 1959) comb. nov., Terminalinus granurum (Browne, 1980) comb. nov., Terminalinus indonesianus (Browne, 1984) comb. nov., Terminalinus moluccanus (Browne, 1985) comb. nov., Terminalinus pseudomajor (Schedl, 1951) comb. nov., Terminalinus sublongus (Eggers, 1927) comb. nov., Terminalinus takeharai (Browne) comb. nov., Terminalinus xanthophyllus (Schedl, 1942) comb. res., Tricosa abberrans (Schedl, 1959) comb. nov., Xenoxylebora truncatula (Schedl, 1957) comb. nov., Xyleborinus figuratus (Schedl, 1959) comb. nov., Xylosandrus cancellatus (Eggers, 1936) comb. nov., all from Xyleborus. Fifteen new synonyms are proposed: Anisandrus ursulus (Eggers, 1923)(= Xyleborus lativentris Schedl, 1942 syn. nov.); Cyclorhipidion amanicus (Hagedorn, 1910)(= Xyleborus jongaensis Schedl, 1941 syn. nov.); Cyclorhipidion bodoanum (Reitter, 1913) (= Xyleborus takinoyensis Murayama, 1953 syn. nov.); Cyclorhipidion pelliculosum (Eichhoff, 1878) (= Xyleborus okinosenensis Murayama, 1961 syn. nov.); Cyclorhipidion repositum (Schedl, 1942) (= Xyleborus pruinosulus Browne, 1979 syn. nov.); Debus persimilis (Eggers, 1927) (= Xyleborus subdolosus Schedl, 1942c syn. nov.); Debus robustipennis (Schedl, 1954) (= Xyleborus interponens Schedl, 1954 syn. nov.); Euwallacea destruens (Blandford, 1896) (= Xyleborus procerior Schedl, 1942 syn. nov.); Euwallacea nigrosetosus (Schedl, 1939) (= Xyleborus nigripennis Schedl, 1951 syn. nov.); Euwallacea siporanus (Hagedorn, 1910) (= Xyleborus perakensis Schedl, 1942 syn. nov.); Microperus quercicola (Eggers, 1926) (= Xyleborus semistriatus Schedl, 1971 syn. nov.); Stictodex dimidiatus (Eggers, 1927) (= Xyleborus spicatus Browne, 1986 syn. nov.); Stictodex halli (Schedl, 1954) (= Xyleborus cuspidus Schedl, 1975 syn. nov.); Terminalinus Hopkins, 1915 (= Fortiborus Hulcr & Cognato 2010 syn. nov.); Terminalinus moluccanus (Browne, 1985) (= Xyleborus teminabani Browne, 1986 syn. nov.).

Relevance and methods. For the Non-chernozem zone, the main factor for the active development of late blight is the low air temperature and its sharp fluctuations during the day, contributing to the formation of increased air humidity and drip-liquid moisture on the plants. In the Moscow region, the causative agent of late blight is manifested almost annually. Populations of Phytophthora infestans are represented by the To and T1 races. Epiphytotic development was observed periodically (1977-1979, 1982, 1986, 1996-1999, 2000, 2001, 2003-2004, 2008-2009, 2013, 2014, 2015, 2016, 2017, 2019) and was provided by the virulent T1 race. Observations showed that epiphytotic situations arose in those years when the minimum air temperature was below long-term average values, and relative humidity and precipitation exceeded them. With a deviation from the norm in the direction of increasing temperature, decreasing rainfall and relatively low humidity, years were observed with a depressive (1992, 1994) or moderate development of the disease (1980, 1981, 1983, 1985, 1987-1991, 2002, 2005-2007, 2010-2012, 2018). Results. As a result of breeding work, a Grot tomato-tolerant tomato variety was obtained, on the basis of which varieties with high resistance Grand, Dubok, Gnom, Chelnok, Patris, Geya, Zolushka, Perst, Severyanka, Blagodatny were obtained. In the general collection of VIR as a source resistance to leaf spot pathogens were registered: Geya (v.k. 14839), Slavyanka (v.k. 14840), Patrice (v.k. 14841), Rossiyanka (v.k. 14842), Krepysh (v.k. 14843), Sibiryachka (v.k. 14444) and line 1079-94 (v.k. 14845) donors, in addition to their high resistance to late blight, have excellent economic characteristics.

CALL for English as a second language1 is an interdisciplinary area of inquiry which has been influenced primarily by educational technology (Reiser, 1987) but also by fields such as computational linguistics2 and recently by applied linguistics as well. These related fields contribute diverse epistemologies which shape CALL research questions and methods. The diversity in CALL research can also be explained in party be the current variety of approaches to CALL development and use. Through the 1970s and early 1980s, pedagogical objectives in CALL were focused primarily, although not exclusively, on improving specified areas of learner's grammatical knowledge through approaches borrowed from educational technology (Hart 1981, Hope, Taylor and Pusack 1984, Wyatt 1984). Today, in contrast, CALL is used for a variety of pedagogical objectives through many different types of software such as microworlds (Coleman 1985, Papert 1980), grammar checkers (Hull, Ball, Fox, Levin and McCutchen 1987), pronunciation feedback systems (Anderson-Hseih 1994, Pennington 1991), intelligent tutoring systems (Chanier, Pengelly, Twidale and Self 1992), concordancer programs (Johns 1986, Tribble and Jones 1990), word processing (Pennington 1993), and software for computer-mediated communication (Kaye 1992). These diverse approaches to CALL are predicated on different beliefs about teaching and learning (Higgins 1995, Kenning and Kenning 1990, Sanders and Kenner 1983, Stevens 1992). Rather than reviewing these “CALL philosophies,” this article will focus on the evolution of research traditions dedicated to the empirical study of CALL use for ESL. Accordingly, the term CALL research is employed to refer to empirical research on the use of CALL.

An isolated upper molar represents Litokoala thurmerae sp. nov., the eighth species of phascolarctid marsupial (koalas) from the South Australian mid-Tertiary sequence, and the fourth from the late Oligocene Etadunna Formation at Lake Palankarinna. It is the smallest and oldest species, differing from L. kutjamarpensis (Stirton et al. 1967), L. kanunkaensis (Springer 1987) and L. dicktedfordi, sp. nov. (the Riversleigh specimens referred to L. kanunkaensis and L. kutjamarpensis (Black and Archer 1997; Louys et al. 2007) but described here as a new species) in size, and the almost total lack of crenulations on the surfaces of the cusps. This brings to at least five the number of probably arboreal mammal species in the Ngama Local Fauna (Pledge 1984) of Mammalon Hill, Lake Palankarinna – the others being Ektopodon stirtoni (Pledge 1986), Pildra magnus (Pledge 1987a), P. sp. cf. kutjamarpensis (ibid.), and Burramys wakefieldi (Pledge 1987b) – and further supports the riparian forest environment interpretation proposed for this part of the Etadunna sequence (Pledge 1984; Martin 2006).

AbstractIt is generally accepted that the purine nucleoside, adenosine, plays a neuromodulatory role in the central nervous system (CNS) (Daly et al., 1981; Phillis ' Wu, 1983; Williams, 1986; Williams, 1987; Snyder, 1985). Adenosine is thought to exert its primary effects presynaptically, by inhibiting the release of neurotransmitters including ³-aminobutyric acid (GABA) and acetylcholine (ACh) (Phillis ' Barraco, 1985; Proctor ' Dunwiddie, 1987). In mammalian retina, cell bodies that are strongly labeled for adenosine-like immunoreactivity (ALIR) have been localized to the ganglion cell layer (GCL) (Braas et al., 1987; Blazynski et al., 1989). Rabbit retinal cells that are labeled by markers for both ACh and GABA are located in the GCL and inner nuclear layer (INL) (Tauchi ' Masland, 1984; Vaney ' Young, 1988b; Brecha et al., 1988). It is now demonstrated in the rabbit retina that approximately 50% of the cells labeled for ALIR within the GCL represent true ganglion cells, with the remainder presumed to be displaced cholinergic amacrine cells (DAPI accumulating). In addition, some of these same cells also demonstrate immunoreactivity to glutamate decarboxylase (GAD), involved in the biosynthesis of the neurotransmitter GABA. Thus, in a particular class of retinal neurons, two fast-acting neurotransmitters as well as a putative neuromodulator have been co-localized.

Five years ago book-length studies of the craft of English for Specific Purposes comprsied Munby's Communicative Syllabus Design (1978) and Robinson's ESP (English for Specific Purposes) (1980), substantive additions to this very short list had been made by widdowson (1984), Kennedy and Bolitho (1984), McDonough (1984), Trimble (1985), and Hutchinson and task-orinented collections of papers (Swales 1985b, Peterson 1986), several conference proceedings (e.g., Tickoo 1986) and comprehensive survey articles such as that by Maher (1986) on English for Medical Purposes. Nor has there been any abatement in the steady stream of ESP-related articles, papers, theses, and monographs.

Since Paul Grice published ‘Logic and conversation’ in 1975, there have been a number of attempts to develop his programmatic remarks on conversational and conventional implicatures further (see Gazdar, 1979; Atlas & Levinson, 1981; Horn, 1985; Sperber & Wilson, 1986; and especially Levinson, 1983, and the references cited therein). The result has been a growing understanding of the relationship between semantics and pragmatics, and more generally of human reasoning in everyday language use. Many aspects of natural language understanding that were previously thought to be part of the conventional meaning of a given expression can now be shown to be the result of conversational inference. And with cancellability as the diagnostic test, a number of traditional problems in the study of meaning are yielding to more satisfactory analyses. Even more ambitiously, implicatures are penetrating into core areas of the syntax, as pragmatic theories of increasing subtlety are proposed for ‘grammatical’ phenomena such as Chomsky's (1981, 1982) binding principles (see Reinhart, 1983, and Levinson, 1987a, b, 1991).

During the past decade there has been a major advance in clinical management of schizophrenic disorders (Falloon & Shanahan, 1990; Lam, 1991; Schooler & Hogarty, 1987). This has resulted from application of strategies based upon a vulnerability-stress model of mental disorders. This considers mental disorders to result from interactions between specific biological vulnerability and non-specific environmental stresses (Falloon & Fadden, 1993).Therapeutic interventions derived from this model combine biomedical strategies, predominantly optimal pharmacotherapy, with psychosocial strategies that aim to enhance the capacity of the index patient and his/her social network to cope with the impact of environmental stresses on the course of the disorder. Ten controlled studies have been published since 1980 that meet minimal standards of research design, with follow-up for at least 1 year (Bellack, Turner, Hersen, & Luber, 1985; Falloon, 1985; Gunderson et al., 1984; Hogarty et al., 1986; Leff, Kuipers, Berkowitz, Eberlein-Fries, & Sturgeon, 1982; Leff et al., 1989; Malm, 1982; McFarlane, 1990; Tarrier et al., 1988; Wallace & Liberman, 1985). Nine also provided 2-year results. Overall, these studies show that the addition of psychosocial strategies to optimal case management and long-term drug prophylaxis halves the rate of major clinical exacerbations in people suffering from schizophrenia. This benefit is most notable during the first year after a major schizophrenic episode, particularly when the psychosocial interventions encompass patients' immediate social support systems, usually the family or marital household (Falloon, 1985; Hogarty et al., 1986; Leff et al., 1982; Leff et al., 1989; McFarlane, 1990; Tarrier et al., 1988).

Cognitive behaviour therapy is now widely accepted clinically as a treatment for depression and anxiety, and there is increasing research evidence to confirm its efficacy (Rush et al, 1977; Blackburn et al, 1981; Murphy et al, 1984; Butler et al, 1987; Beck, 1988). Of the various short term psychotherapies currently available, it is probably the most widely known and best researched. Despite this, and the recommendation of the Royal College of Psychiatrists (1986) that trainees receive training in cognitive therapy, there is little opportunity to gain a formal training in this psychotherapy. Short workshops are often available through the British Association for Behavioural Psychotherapy and from other sources, and ad hoc supervision from interested psychologists and psychiatrists may be available in some centres. Scott et al (1985) described a workshop and peer supervision training scheme in Newcastle. Macaskill (1986) reported a course for psychiatrists in training in Sheffield which extended over 20 weeks and combined Beck's cognitive therapy and Ellis' Rational Emotive Therapy.

American marten (Martes americana) use primarily old growth coniferous habitat (Bateman 1986, Raine 1983, Soutiere 1979, Steventon and Major 1982). However, habitat use may vary by season (Steventon and Major 1982, Koehler and Hornocker 1977, Wynne and Sherburne 1984). In summer, marten use of non-forested areas to forage for fruits and berries has been documented (Soutiere 1979, Steventon and Major 1982). While there is some seasonal variation in habitat use, all authors agree that old growth is the core habitat required by marten. During winter, marten tend to remain in mature coniferous forests and will seldom cross open areas greater than 100m wide (Steventon and Major 1982, Soutiere 1979). Winter appears to be the most critical period for marten survival (Zielinski et al. 1983, Buskirk 1984).

People moving into a new environment often find the process stressful (Cochrane, 1983; Cochrane & Stopes-Roe, 1980). One of the reasons for the stress is that the new environment may not provide substitutes for the losses incurred during the process of relocation (Beck & Young, 1978). Separation anxiety, loss, interruption of lifestyle, reduced control over the psychosocial environment, role change, and self-consciousness are all after-effects of the relocation process (Fisher, 1988).In general, migrants move as a group or as a family unit (Marmot & Syme, 1976; Murphy, 1976), but this is not true for students. Despite the fact that students often perceive their relocation as a challenging life event (Fulmer, Medalie, & Lord, 1982), they must face the challenge on their own, for they cannot count on the support and comfort of family and old friends. Furthermore, their relocation is to a competitive environment in which they are exposed to a range of stressors which, in all likelihood, are novel.Students commonly experience problems following their relocation. The problems are related to change of culture (Oberg, 1960), to racial discrimination, and to change of diet and climate (Dyal & Dyal, 1981; Murphy, 1977; Nicassio & Pate, 1984). Other problems, including fatigue and headaches (Miller & Harwell, 1983), homesickness (Fisher, 1988; Fisher & Murray, 1984), and language difficulties (Mellam, 1989) may be more common to students than to other migrant groups.

In October 1983 the secretary-general of the Chinese Communist Party (CCP), Hu Yaobang, formally announced the beginning of a two-stage, three-year Party rectification. The first stage, from November 1983 to around December 1984, would concentrate on the rectification of Party committees (dangwei) and leading offices at the Centre and in the provinces, major municipalities and autonomous regions. The second stage, from early 1985 to the end of 1986, would focus on rectification of Party organizations below provincial level. In fact, however, rectification was not officially ended until May 1987.

Chigger mites of Turkey were studied on the base of three expeditions (in 1969, 1998, and 2009) and revision of all pre-viously published data on this subject. In total, 43 species from 14 genera parasitizing rodents, soricomorphs, and reptilesin Turkey are considered, 37 of which are identified exactly. Eight new species from the Western and Central Taurus Mtsare described: Xinjiangsha lyciaensis sp. nov., Kepkatrombicula ciliciensis sp. nov., K. taurensis sp. nov., Neotrombiculakizlarsivrisiensis sp. nov., N. kolebinovae sp. nov., N. bolkarensis sp. nov., Miyatrombicula attaliaensis sp. nov., andCheladonta deserticola sp. nov. Twelve species were recorded in Turkey for the first time; moreover, some new recordsfrom other countries were reported (four species were for the first time recorded in Russia, and by one species were re-corded in Armenia, Azerbaijan, Israel, Turkmenistan, and Uzbekistan). For seven chigger genera (Xinjiangsha Wen andShao, 1984, Hirsutiella Schluger and Vysotzkaya, 1970, Lacertacarus Schluger and Vasilieva, 1977, Miyatrombicula Sa-sa, Kawashima and Egashira, 1952, Brunehaldia Vercammen-Grandjean, 1960, Cheladonta Lipovsky, Crossley andLoomis, 1955, and Matacarus Vercammen-Grandjean, 1956), the complete lists of species in the world fauna are provid-ed. Four new synonyms and 18 new combinations were established: Xinjiangsha Wen and Shao, 1984 (= AboriginesiaKudryashova, 1993, syn. nov.), Neotrombicula vulgaris (Schluger, 1955) (= Trombicula acomys Radford, 1957, syn.nov.), Brunehaldia brunehaldi (Vercammen-Grandjean, 1956) (= Eushoengastia (Brunehaldia) aegypti Vercammen-Grandjean and Kolebinova, 1966, syn. nov.), Brunehaldia curtinae (Kepka, 1966) (= Eushoengastia (Brunehaldia) lucida(Schluger, 1966), syn. nov.), Xinjiangsha blanci (Vercammen-Grandjean, 1956), comb. nov., X. danieli (Kolebinova,1974), comb. nov., X. feideri (Daniel and Brelih, 1959), comb. nov., X. galla (Kolebinova, 1970), comb. nov., X. iberica(Schluger, 1957), comb. nov., X. imlilica (Brown, 2008), comb. nov., X. ludmilae (Kováčik and Kalúz, 2010), comb. nov.,X. montana (Kudryashova, 1965), comb. nov., X. monticola (Kolebinova, 1974), comb. nov., X. obuchi (Kováčik and Ka-lúz, 2010), comb. nov., X. raissae (Hushcha and Kharadov, 1987), comb. nov., X. talpae (Kolebinova, 1977), comb. nov.,X. tarda (Schluger, 1957), comb. nov., X. theodori (Hushcha, 1986), comb. nov., X. tshatkalica (Hushcha and Kharadov,1985), comb. nov., X. variabilis (Schluger and Vshivkov, 1967), comb. nov., Brunehaldia spalaxia (Radford, 1957),comb. nov., and Matacarus demrei (Kepka, 1962), comb. nov. A key to genera and species of chigger mites from Turkey is provided.

In a series of studies, Suzanne Flynn (1984; 1987a; 1987b) has proposed a specific theory with regard to Universal Grammar (Chomsky, 1986) and second language learning. The present study, a replication of the methodology and hypotheses in Flynn (1987b), utilizes Arabic-speaking learners of ESL, who are predicted by Flynn's theory to perform much like her Spanish-speaking subjects. Present findings, however, contradict those of Flynn's work and, thus, cast doubt on her theory of Universal Grammar and L2 learning. Closer examination then reveals that the linguistic underpinnings of Flynn's theory in Huang (1982) have been superseded by the more recent analysis of Koopman (1984), which does not support Flynn's theory. Furthermore, certain assumptions on processing main and subordinate clauses (Townsend and Bever, 1978) and sentence anaphora (Carden, 1986; Reinhart, 1986), which have the capacity to predict Flynn's findings, also fail satisfactorily to predict the results from the speakers of Arabic. Finally, an analysis that predicts a failure of parsing under certain conditions is presented and found to predict the present findings with a high degree of accuracy. However, the parsing analysis must be subjected to further study with an aim toward falsification before it can be assumed to be conclusive.

Until recently, common dietary prescription for chronic hypoglycemia has been a high-protein, low-carbohydrate regimen (Airola, 1977; Danowski, 1978). Increasing evidence suggests, however, that a diet rich in complex carbohydrates may be more suitable for those involved in endurance exercise (Costill & Miller,. 1980; Sherman & Costill, 1984). Although little original research has been undertaken which deals with the effects of performance-enhancing nutritional techniques on the hypoglycemic exerciser, such practices need to be examined in order to understand the mechanisms involved. Specificially, carbohydrate loading would seem to be as important, if not more so, to the hypoglycemic individual as a means of supercompensating glycogen stores prior to endurance performance. The roles of pre-exercise supplements and carbohydrate feedings during exercise in this context are less clear. Although results are mixed, ‘increasing evidence (Snyder et al., 1983; Okano et al., 1988) suggests that carbohydrates may be consumed before exercise with beneficial effects on performance. Because of rapid gastric emptying characteristic of reactive hypoglycemia, it would appear that pre-exercise supplementation may be of particular value to the hypoglycemic exerciser. Further, recent studies (Bergstrom & Hultman, 1967; Coyle et al., 1983; Foster et al., 1986; Leatt & Jacobs, 1986; Horton, 1988) indicate that carbohydrate solutions taken during exercise are effective in maintaining serum glucose levels and improving endurance performance. Careful monitoring of nutritional factors would appear to be critical in creating a suitable dietary environment for the hypoglycemic endurance exerciser.

Based on the investigation data of mercury (Hg) in waters in Jiaozhou bay during time peroids of 1979 to 1985 (absent of 1984), this paper tried to analysis the content, pollution level and theis temporal variations of Hg in Jiaozhou Bay, to reveal the changing trend of Hg, and to provide basis for pollution control of Hg in the bay. Results showed that, during 1979-1985, water in Jiaozhou Bay had been polluted by Hg in certain levels. For seasonal variation, there was a dicreasing trend form summer to winter in 1979, 1981 and 1985, and an increasing trend form summer to winter in 1980 and 1983. For annual variation, there was an obvious decreasing trend of Hg pollution from 1979-1982, while from 1982-1985 an increasing trend occurred. The temporal variation of Hg in Jiaozhou Bay reflects the conflict between economic growth and environmental protection. Having in mind that the environmental carrying capacity of Jiaozhou Bay is not unlimited, and the environmental disruption might finally cause economic loss and disasters to the human, we believe that the dischargd load of Hg should be limited in a suitable amount.

The three-dimensional structures of proteins are among the most valuable contributions of biophysics to the understanding of biological systems (Dickerson & Geis, 1969; Creighton, 1983). Protein structures are utilized in the description and interpretation of a wide variety of biological phenomena, including genetic regulation, enzyme mechanisms, antibody recognition, cellular energetics, and macroscopic mechanical and structural properties of molecular assemblies. Virtually all of the information currently available about the structures of proteins at atomic resolution has been obtained from diffraction studies of single crystals of proteins (Wyckoff et al, 1985). However, recently developed NMR methods are capable of determining the structures of proteins and are now being applied to a variety of systems, including proteins in solution and other non-crystalline environments that are not amenable for X-ray diffraction studies. Solid-state NMR methods are useful for proteins that undergo limited overall reorientation by virtue of their being in the crystalline solid state or integral parts of supramolecular structures that do not reorient rapidly in solution. For reviews of applications of solid-state NMR spectroscopy to biological systems see Torchia and VanderHart (1979), Griffin (1981), Oldfield et al. (1982), Opella (1982), Torchia (1982), Gauesh (1984), Torchia (1984) and Opella (1986). This review describes how solid-state NMR can be used to obtain structural information about proteins. Methods applicable to samples with macroscopic orientation are emphasized.