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Articoli di riviste sul tema "H61 .h36 2012"
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Neffe-Skocińska, Katarzyna, Katarzyna Dybka-Stępień e Hubert Antolak. "Izolacja i identyfikacja szczepów bakterii kwasu octowego o potencjalnych właściwościach prozdrowotnych". Zywnosc Nauka Technologia Jakosc/Food Science Technology Quality 120, n. 3 (2019): 183–95. http://dx.doi.org/10.15193/zntj/2019/120/307.
Testo completoAbstract (sommario):
Celem pracy była izolacja i identyfikacja szczepów bakterii kwasu octowego (AAB) w systemie polifazowym oraz wstępne zdefiniowanie in vitro ich potencjalnych właściwości probiotycznych w warunkach laboratoryjnych. Materiał do izolacji bakterii kwasu octowego stanowiły owoce sezonowe pochodzące z lokalnych upraw z województwa mazowieckiego i łódzkiego oraz kultura startowa do produkcji Kombuchy. Identyfikację szczepów przeprowadzono z zastosowaniem systemu polifazowego bazującego na charakterystyce morfologicznej, uzdolnieniach biochemicznych i identyfikacji genetycznej. Na podstawie otrzymanych wyników utworzono kolekcję szczepów AAB bezpiecznych dla zdrowia ludzi, następnie określono antybiotykowrażliwość na 12 wybranych substancji bakteriobójczych i wykonano testy in vitro przeżywalności wyselekcjonowanych szczepów w warunkach modelowego przewodu pokarmowego człowieka. Na podstawie analizy fenotypu i sekwencjonowania genu 16S rRNA spośród 9 izolatów bakterii kwasu octowego do badań wybrano 3 szczepy należące do gatunku Gluconobacter oxydans: H31 wyizolowany z czarnej porzeczki oraz H30 i H32 – z kultury startowej do produkcji herbaty Kombucha. Stwierdzono, że 2 szczepy: G. oxydans H30 wyizolowany z Kombuchy i G. oxydans H31 pochodzący z czarnej porzeczki charakteryzują się dobrą przeżywalnością średnio na poziomie 6 log jtk/ml podczas pasażu przez modelowy układ pokarmowy człowieka i tym samym spełniają jedno z podstawowych kryteriów dla bakterii potencjalnie probiotycznych. Wszystkie badane szczepy wykazywały zbliżoną antybiotykowrażliwość. Przeprowadzona diagnostyka wyselekcjonowanych szczepów bakterii kwasu octowego stanowi podstawę do dalszych badań tych mikroorganizmów w kierunku potwierdzenia pozostałych cech probiotycznych.
2
Brankovic-Radojcic, Dragana, Vojka Babic, Zdenka Girek, Tomislav Zivanovic, Aleksandar Radojĉic, Milomir Filipovic e Jelena Srdic. "Evaluation of maize grain yield and yield stability by AMMI analysis". Genetika 50, n. 3 (2018): 1067–80. http://dx.doi.org/10.2298/gensr1803067b.
Testo completoAbstract (sommario):
Significant genotype x environment interaction for quantitative traits, such is grain yield, reduces the usefulness of genotype means, over all environments, for selecting superior genotypes. AMMI model is a valuable statistical tool in identifying systemic variation contained in the interaction effect. Obtained data could be applied in maximizing yield potential in every environment based on both narrow and wide genotype adaptability, without the necessity of developing breeding programs for smaller targeted environments. Precise assortment of superior genotypes, with the assistance of AMMI model, leads to the better recommendation of newly bred hybrids, and thus increasing maize grain yield in a targeted environment. In this research genotype x environment interaction and yield stability of 36 maize hybrids of FAO 300-700 maturity group was investigating. The trial was set according to Randomized Complete Block Design (RCBD). Data were processed in order to obtain average estimates of grain yield, and yield stability was assessed by the method of AMMI analysis. The highest average grain yield was achieved in 2011 (11.62 t/ha), and the lowest in the most stressful and dry 2012 (6.90 t/ha). In the region Loznica L2 the highest average yield was noticed (13.81 t/ha), while at L7 (Sremska Mitrovica) average grain yield was the lowest (6.97 t/ha). Results of AMMI analysis gave precise recommendation for production of maize hybrids in certain environments, by determining winning areas of hybrids H20, H11 and H36. Medium early maturing and high yielding hybrids (H11 and H20) are therefore considered more favorable for production in environments with lower precipitation, while high yielding and more stable hybrids H21 and H35 are suitable for a wider range of environments. Hybrid H36 (FAO 700) showed its full potential at L2, and L3 which did not suffer from a lack of moisture. This hybrid also expressed its best potential in environments with favorable conditions.
3
Mertens, Karel, e Morten O. Ravn. "The Dynamic Effects of Personal and Corporate Income Tax Changes in the United States: Reply". American Economic Review 109, n. 7 (1 luglio 2019): 2679–91. http://dx.doi.org/10.1257/aer.20180707.
Testo completoAbstract (sommario):
In this reply to a comment by Jentsch and Lunsford, we show that the evidence for economic and statistically significant macroeconomic effects of tax changes in Mertens and Ravn (2013) remains present for a range of asymptotically valid inference methods. (JEL E23, E62, H24, H25, H31, H32)
4
Jentsch, Carsten, e Kurt G. Lunsford. "The Dynamic Effects of Personal and Corporate Income Tax Changes in the United States: Comment". American Economic Review 109, n. 7 (1 luglio 2019): 2655–78. http://dx.doi.org/10.1257/aer.20162011.
Testo completoAbstract (sommario):
Mertens and Ravn (2013) estimate impulse response functions (IRFs) from income tax changes in a structural vector autoregression (SVAR) by using narrative accounts of tax liability changes as proxy variables. To produce confidence intervals for their IRFs, they use a residual-based wild bootstrap, which has subsequently become popular in the proxy SVAR literature. We argue that their wild bootstrap is not valid, producing confidence intervals that are much too small. Using a residual-based moving block bootstrap that is proven to be asymptotically valid, we reestimate confidence intervals for Mertens and Ravn’s (2013) IRFs and find no statistically significant effects of tax changes on output, labor, and investment. (JEL E23, E62, H24, H25, H31, H32)
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Cao, Haipeng, Yibin Yang, Liqun Lu, Xianle Yang e Xiaohui Ai. "Effect of copper sulfate on Bdellovibrio growth and bacteriolytic activity towards gibel carp-pathogenic Aeromonas hydrophila". Canadian Journal of Microbiology 64, n. 12 (dicembre 2018): 1054–58. http://dx.doi.org/10.1139/cjm-2018-0165.
Testo completoAbstract (sommario):
The use of bdellovibrios has been regarded as an alternative to control multidrug-resistant pathogens and fish bacteriosis. However, scarce information is available on the potential of bdellovibrios in the presence of copper sulfate, which is an algicide widely used to treat cyanobacterial blooms in aquaculture. In the present study, the effects of copper sulfate at sublethal and lethal levels (0.1 and 1.0 mg·L−1) on Bdellovibrio sp. strain BDF-H16 were evaluated. The growth of Bdellovibrio sp. strain BDF-H16 was significantly promoted by both concentrations of copper sulfate, but less so by the lethal concentration. The bacteriolysis of gibel carp-pathogenic Aeromonas hydrophila by Bdellovibrio sp. strain BDF-H16 was also stimulated by copper sulfate in both solid and liquid media. However, Bdellovibrio sp. strain BDF-H16 with 0.1 mg·L−1 copper sulfate clearly inhibited infection of gibel carps by A. hydrophila better than Bdellovibrio sp. strain BDF-H16 with 1.0 mg·L−1 copper sulfate did.
6
Montazer, Zahra, Mohammad B. Habibi Najafi e David B. Levin. "Microbial degradation of low-density polyethylene and synthesis of polyhydroxyalkanoate polymers". Canadian Journal of Microbiology 65, n. 3 (marzo 2019): 224–34. http://dx.doi.org/10.1139/cjm-2018-0335.
Testo completoAbstract (sommario):
We have characterized the ability of eight bacterial strains to utilize powdered low-density polyethylene (LDPE) plastic (untreated and without any additives) as a sole carbon source. Cell mass production on LDPE-containing medium after 21 days of incubation varied between 0.083 ± 0.015 g/L cell dry mass (cdm) for Micrococcus luteus IRN20 and 0.39 ± 0.036 g/L for Cupriavidus necator H16. The percent decrease in LDPE mass ranged from 18.9% ± 0.72% for M. luteus IRN20 to 33.7% ± 1.2% for C. necator H16. Linear alkane hydrolysis products from LDPE degradation were detected in the culture media, and the carbon chain lengths of the hydrolysis products detected varied, depending on the species of bacteria. We also determined that C. necator H16 produced short-chain-length polyhydroxyalkanoate biopolymers, while Pseudomonas putida LS46 and Acinetobacter pittii IRN19 produced medium-chain-length biopolymers while growing on polyethylene powder. Cupriavidus necator H16 accumulated poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-V) polymers to 3.18% ± 0.4% of cdm. The monomer composition of the PHB-V was 94.9% ± 0.61% 3-hydroxybutyrate and 5.03% ± 0.56% 3-hydroxyvalerate. This is the first report that provides direct evidence for simultaneous bioconversion of LDPE plastic to biodegradable polyhydroxyalkanoate polymers.
7
Xia, Xiaodong, Jianghong Meng, Patrick F. McDermott, Sherry Ayers, Karen Blickenstaff, Thu-Thuy Tran, Jason Abbott, Jie Zheng e Shaohua Zhao. "Presence and Characterization of Shiga Toxin-Producing Escherichia coli and Other Potentially Diarrheagenic E. coli Strains in Retail Meats". Applied and Environmental Microbiology 76, n. 6 (15 gennaio 2010): 1709–17. http://dx.doi.org/10.1128/aem.01968-09.
Testo completoAbstract (sommario):
ABSTRACT To determine the presence of Shiga toxin-producing Escherichia coli (STEC) and other potentially diarrheagenic E. coli strains in retail meats, 7,258 E. coli isolates collected by the U.S. National Antimicrobial Resistance Monitoring System (NARMS) retail meat program from 2002 to 2007 were screened for Shiga toxin genes. In addition, 1,275 of the E. coli isolates recovered in 2006 were examined for virulence genes specific for other diarrheagenic E. coli strains. Seventeen isolates (16 from ground beef and 1 from a pork chop) were positive for stx genes, including 5 positive for both stx 1 and stx 2, 2 positive for stx 1, and 10 positive for stx 2. The 17 STEC strains belonged to 10 serotypes: O83:H8, O8:H16, O15:H16, O15:H17, O88:H38, ONT:H51, ONT:H2, ONT:H10, ONT:H7, and ONT:H46. None of the STEC isolates contained eae, whereas seven carried enterohemorrhagic E. coli (EHEC) hlyA. All except one STEC isolate exhibited toxic effects on Vero cells. DNA sequence analysis showed that the stx 2 genes from five STEC isolates encoded mucus-activatable Stx2d. Subtyping of the 17 STEC isolates by pulsed-field gel electrophoresis (PFGE) yielded 14 distinct restriction patterns. Among the 1,275 isolates from 2006, 11 atypical enteropathogenic E. coli (EPEC) isolates were identified in addition to 3 STEC isolates. This study demonstrated that retail meats, mainly ground beef, were contaminated with diverse STEC strains. The presence of atypical EPEC strains in retail meat is also of concern due to their potential to cause human infections.
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Rauh, Joshua, e Ryan Shyu. "Behavioral Responses to State Income Taxation of High Earners: Evidence from California". American Economic Journal: Economic Policy 16, n. 1 (1 febbraio 2024): 34–86. http://dx.doi.org/10.1257/pol.20200500.
Testo completoAbstract (sommario):
Using administrative data, we analyze the response to Proposition 30, a 2012 measure that increased California marginal tax rates by up to 3 percentage points for high-income households. Relative to baseline departure rates, an additional 0.8 percent of the residential tax base that landed in the top bracket left California in 2013. Using matched out-of-state taxpayers as controls reveals an income elasticity with respect to the marginal net-of-tax rate of 2.5–3.2 for high earners who stayed. These responses eroded 45.2 percent of state windfall tax revenues within the first year and 60.9 percent within 2 years, driven largely by the intensive margin. (JEL D91, H24, H31, H71, H73, J61, R23)
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Peter, Baláž. "Results of the second phase of deep-sea polymetallic nodules geological survey in Interoceanmetal Joint Organization licence area (2016–2021)". Mineralia Slovaca 54, n. 2 (23 gennaio 2022): 95–118. http://dx.doi.org/10.56623/ms.2022.54.2.1.
Testo completoAbstract (sommario):
The exploration rights of the Interoceanmetal Joint Organization for exploration of polymetallic nodules (PMN) are granted from 29 March 2001 to an area located within the Clarion-Clipperton Zone (CCZ) in the eastern central Pacifi c Ocean. Exploration area covers 75,000 km2 and consists of two sectors (B1 and B2). The B2 sector comprises four exploration blocks (H11, H22, H33 and H44). The most prospective area, selected for detailed research, is marked as H22_NE exploitable block and delineated within the H22 exploration block. The article presents results of geological survey, based mostly on the data collected during the second phase of exploration in the licence area (2016–2021, extension of the contract). Results are based on IOM’s expeditions and relevant analytical work. During the IOM-2018 expedition high resolution bathymetric survey of H11, H22, H33 and H44 exploration blocks was carried out. The IOM-2019 expedition provided a new set of the data obtained using the distance methods (side-scan sonar, profi ler) and contact methods (box-corer and gravity corer) in H22_NE exploitable block, H33 exploration block and preliminary delineated Preservation Reference Zone. The study was focused on analytical work based on sediment and nodule analyses of samples in H22 exploration block and H22_NE exploitation block. New estimation of mineral resources in B2 sector was caried out using the geostatistical method of ordinary block kriging with Yamamoto correction. The polymetallic nodule resources have been classifi ed within the Inferred, Indicated and Measured Resources categories of the CRIRSCO classifi cation system.
10
Lundstrom, Samuel. "The Impact of Family Income on Child Achievement: Evidence from the Earned Income Tax Credit: Comment". American Economic Review 107, n. 2 (1 febbraio 2017): 623–28. http://dx.doi.org/10.1257/aer.20150988.
Testo completoAbstract (sommario):
In a recent article in the American Economic Review, Dahl and Lochner (2012) use changes in the Earned Income Tax Credit to estimate the causal effect of family income on child achievement. Their instrumental variable (IV ) estimates imply that a $1,000 increase in income raises combined math and reading test scores by about 6 percent of a standard deviation. I document a variable coding error. Correcting this error reduces the IV estimates by 32 percent; correcting this error does not change the qualitative conclusions of the study. (JEL H24, H31, I21, I38, J13)
Tesi sul tema "H61 .h36 2012"
1
Kronberger, Ralf, e Christoph Schmid. "Effects of the Austrian Income Tax Reform 2015/2016 on Private Consumption: Survey Findings". WU Vienna University of Economics and Business, 2018. http://epub.wu.ac.at/6769/1/wp275.pdf.
Testo completoAbstract (sommario):
We use survey findings to analyse the effects of the Austrian income tax reform 2015/2016 on private consumption differentiated by income classes. Using survey data, we also estimate the corresponding average marginal propensities to consume and compare them to applied average marginal propensities to consume in economic models used to analyse the previous two income tax reforms in Austria. The estimated average marginal propensity to consume amounts to approximately 0.46, whereby in tendency increasing from the lowest income class (0.42-0.43) to the highest income class (0.48-0.50). Our estimated average marginal propensity to consume across all income classes basically corresponds to those used in economic models to evaluate the income tax reform 2015/2016. However, our estimated marginal propensities to consume by income classes fundamentally differ from those used in the economic models.Series: Department of Economics Working Paper Series
2
"Auctions with application system". 2014. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1291537.
Testo completoAbstract (sommario):
We study sealed-bid first-price auction for one commodity. While traditional model (Vickrey, 1961) consists of only one stage of bidding, we introduce a new model by adding a new stage of application before the stage of final bidding. In the application stage, each bidder submits a tentative sealed bid, and it is then announced who is the tentative winner. Then in the bidding stage, each bidder gives his final (sealed) bid, and the final winner receives the commodity by paying his final bid.To analyze the model, we use the equilibrium concepts of Weak Perfect Bayesian Equilibrium (WPBE). The role of the tentative bid can be regarded as a pre-play communication between the bidders. We obtain three main results:
1) Our Theorem 1 shows that every equilibrium in the traditional one-stage model can be realized as a WPBE in our two-stage model, and the tentative bids of bidders are independent of their private values.
2) Our Theorem 2 shows that if one requires the tentative bids of bidders to be strictly increasing with their private values, then no symmetric WPBE exists.
3) Our Theorem 3 shows that if each bidder uses a weakly increasing step function as the tentative bidding strategy, then no symmetric WPBE exists.
Our work suggests that if each bidder is free to change his final bid from the tentative bid, then introducing the application system does not affect the outcome of the auction.
本文章主要論及首價密封投標拍賣。傳統的拍賣只有一個階段﹐而在這篇文章我們會在傳統拍賣前加一個「申請階段」。在「申請階段」中﹐每名投標者需要遞交一個意向價格﹐拍賣者再根據意向價格宣佈那位投標者成為申請人。之後的拍賣中﹐每名投標者會遞交一個最終價格﹐最高價者會成功投得該項商品。 我們會使用「弱完美貝葉斯均衡」(WPBE)的概念去分析本文中的模型。我們得到以下的三個主要結果:
1)在定理一中﹐我們發現所有傳統單一階段拍賣中的均衡點, 在我們新申請拍賣的模型中﹐都會是弱完美貝葉斯均衡(WPBE)﹐而且投標者的意向價格會和他們對商品的自身價值沒有關係。
2)在定理二中﹐如果投標者的意向價格函數和對商品的自身價值是嚴格遞升﹐那麼對稱性弱完美貝葉斯均衡不會存在。
3)在定理三中﹐如果申請階段的策略是遞升階梯函數﹐那麼對稱性弱完美貝葉斯均衡不會存在。
我們的研究指出, 當投標者可以不受意向價格規範而自己更改最終價格﹐那麼加入「申請階段」也不會改變拍賣的結果。
Ho, Man Kit.
Thesis M.Phil. Chinese University of Hong Kong 2014.
Includes bibliographical references (leave 41).
Abstracts also in Chinese.
Title from PDF title page (viewed on 18, October, 2016).
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
3
Hocking, Viveka Turnbull. "Beyond the object : an intersection of design and research within a sustainability context". Phd thesis, 2011. http://hdl.handle.net/1885/151200.
Testo completoAbstract (sommario):
Since the notion of 'research through design' was included in Frayling's now famous 1993 paper 'Research in Art and Design' many in the design discipline have been exploring the nature of such an approach. This study explores what a research-through-design approach could be like for developing socially oriented research outcomes particularly in regards to sustainability. Much of design research focuses on constructing knowledge related to artefacts. In contrast, this study uses the design approach to construct non-object-orientated knowledge about possible futures. By non-object-orientated I am referring to a design process which does not focus on the artefact and instead is seen as facilitating the practice of everyday life. Hence, the purpose of this study is to construct a design-led methodology for the context of sustainability. To construct this design-led methodology I compile components from design practice, design research and sustainable design theory to re-mould design into a research methodology. I have also used a design project approach to construct the methodology which is reflected in the structure of the thesis. This approach includes starting with a brief, then compiling the theoretical components and context in the background research, to be distilled into a concept for the methodology. This concept is encapsulated in the notion of enabling design from within the system of the everyday. Then I use field work conducted in a rural Australian town to develop this concept, where participants are engaged in a process of imagining possible futures of sustainable wellbeing for their town. This step applied a 'thinking by doing' approach to further develop the concept into an outcome. The outcome is a proposal for a methodology which I call Bigamatics. This final methodology is presented as a mock-up of a guide book for early researchers to develop their own design-led research projects. I see design research as sitting within a socially oriented research context as all design outcomes are fundamental about society. Hence this design-led methodology should be of use not only to design but to socially oriented researchers more generally. However, this study only attempts to initiate this conversation between a wider variety of researchers, hoping to continue this discourse into the future. The proposed methodology is constructed for an academic context though could also be developed for wider application such as community-based and practice-based projects.
4
"Analysis of the diets of two marine crustaceans using next generation sequencing of prey DNA". 2015. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1291524.
Testo completoAbstract (sommario):
Crustaceans are ubiquitous in the world’s oceans and include species ranged in size from < 1 mm to > 1 m. Information on the natural diet of marine crustaceans, especially the small crustaceans such as copepods, is usually obtained by measuring gut content microscopically or by the use of electronic particle counters, by microscopic examination of gut contents and fecal pellets, and by the use of stable isotopes or taxon-specific pigment markers. Unfortunately, most of these methods involve conducting feeding experiments in artificial laboratory condition, require a high level of taxonomic expertise, and provide only coarse information on food types that are digestion-resistant. Increasingly over the past decade, DNA-based methods have been used to study the natural diet of small marine organisms such as molluscan larva and the lobster larva with high taxonomic resolution.In this thesis, the diets of two marine crustaceans are investigated. The small calanoid copepod Calanus sinicus (2.5−3.5 mm), one of the animals studied in this thesis, is a dominant member of the marine zooplankton in the continental shelf waters of China and the northwest Pacific Ocean. Copepods of the genus Calanus are generally considered to be herbivorous although information on the natural diet of C. sinicus is scarce.
Another marine crustacean studied in this thesis is the hydrothermal crab Xenograpsus testudinatus. This crab is endemic to the shallow-water hydrothermal vents of Kueishan Island in the northeastern corner of Taiwan. The extreme environment inhabited by X. testudinatus is unsuitable for most marine organisms due to discharge of hot and acidic water with high content of sulphur. Although the diet of X. testudinatus has been studied by several investigations, the taxonomic resolution of the dietary information is poor.
Accurate information of the diet and feeding habit of a species provides the basis for understanding its role in aquatic food webs. In my thesis, the natural diets of the marine copepod C. sinicus from Hong Kong and Taiwan and the hydrothermal vent crab X. testudinatus were investigated using Illumina sequencing of the prey DNA in the gut content. Variable regions of the 18S and 16S rRNA genes in the gut contents are amplified using DNA extracted from gut contents to determine the composition of eukaryotes and prokaryotes in the diet of the marine crustacean. The diet of X. testudinatus are compared to those of the mangrove crabs Perisesarma bidens.
Gelatinous zooplankton including Hydrozoa and unclassified Ctenophora are very common in the gut contents of C. sinicus from both Hong Kong and Taiwan. C. sinicus from Hong Kong contains diatoms and dinoflagellates, while C. sinicus from northern Taiwan also feeds on Anthozoa, Ascidiacea and Malacostraca. Unclassified Proteobacteria and unclassified bacteria are common in C. sinicus from both Hong Kong and Taiwan. Cyanobacteria, mainly Synechococcus, are only found in C. sinicus from Taiwan. My results show that C. sinicus can feed omnivorously on a diverse assemblage of phytoplankton and zooplankton.
The diet of X. testudinatus differs from that of P. bidens. While P. bidens feeds mainly on Magnoliopsida plant, X. testudinatus feeds on a diverse assemblage of organisms including algae, fishes, bivalves, copepods and anthozoans. Although soil bacteria such as Rodobacteraceae and cyanobacteria including Oscillatoriphycidae occur in the gut contents of both crabs, Mycoplasmataceae and Helicobacteraceae, which are suspected to be gut probiotic bacteria, are only found in the vent crabs. My findings suggest that both X. testudinatus and P. bidens are scavengers.
In short, the DNA-based method can provide detailed information on the natural diets of marine crustaceans and provide accurate information on the trophic role of the marine crustaceans in the food webs.
甲殻類動物在海洋上是很常見的。牠們的體型大小也有很大的差異(由< 1毫米到 > 1米)。有關海洋甲殻類動物食性研究特別是一些細小甲殻類動物例如橈腳類動物通常都是利用電子計量器或以肉眼在顯微鏡下計算，利用電子顯微鏡去鑑定腸及糞便中的食物殘滓及利用穩定同位素或物種獨有的色素去鑑定。不過，這些方法包括實驗室餵食測試需要熟練的鑑定技巧而且這些方法只能夠提供粗略的資訊。例如只限於會經消化後留下硬塊的食物。雖然如此，最近有研究成功利用DNA鑑定的方法去找出一些細小海洋甲殻類動物例如龍蝦及軟體動物的幼體的食性。
這篇論文主要研究兩種海洋甲殻類動物的野外食物。其中一種研究對象，細小的橈腳類動物中華哲水蚤 (2.5−3.5毫米)，在中國沿岸海域及西北太平洋是很常見的。雖然有關於中華哲水蚤在食性資料不多，但是哲水蚤類的動物一般被認為是草食性。
這篇論文的另一研究對象是烏龜怪方蟹。牠在位於台灣東北部的龜山島的淺水熱噴泉是很常見的。在淺水熱噴泉的生境，由於經常有酸性高溫及含有高濃度硫磺的水噴出，所以那裡是被認為不適合生物居住的。雖然烏龜怪方蟹的食性也有被研究過，但有關牠們的攝食的物種鑑定還是不夠詳細。
準確的有關生物的食性的資料可以幫助我們了解該生物在海洋食物網中角色。有見及此，在這篇論文中主要會利用DNA鑑定及Illumina定序技術來研究來自香港及台灣的中華哲水蚤及在淺水熱噴泉的烏龜怪方蟹的食性。在實驗中，腸道中的DNA的18S及16S rRNA基因中DNA序列差異大的區域會被用來鑑定腸道中的有核生物及原生生物。居住在紅樹林的雙齒近相手蟹的攝食也會用來跟烏龜怪方蟹比較。
啫哩狀的浮游動物比如水息蟲類動物及櫛水母來自香港及台灣的中華哲水蚤的腸道中是很常見的。在來自香港的中華哲水蚤腸道中找到了硅藻及甲藻，而在來自台灣的中華哲水蚤的腸道中卻找到珊瑚綱動物，海蛸和軟甲綱動物。在來自香港及台灣的中華哲水蚤的腸道中找到的原核生物為不能鑑定的細菌及不能鑑定的變形菌。藍綠藻主要為聚球藻只有在來自台灣的中華哲水蚤的腸道中找到。研究的結果顯示中華哲水蚤是雜食性及攝食很多不同類型的浮游生物。
研究結果顯示烏龜怪方蟹所食的食物跟雙齒近相手蟹很不同。雙齒近相手蟹主要攝食雙子葉植物綱植物，而烏龜怪方蟹所吃的食物是高生物多樣性的包括藻類，魚，雙殻綱動物，橈腳類動物及珊瑚綱動物。土壤細菌比如紅桿菌科細菌及藍綠藻都可以烏龜怪方蟹及雙齒近相手蟹的腸道及胃道中找到，而可能是腸道原生細菌的枝原體科細菌及螺旋杆菌科細菌只能夠在烏龜怪方蟹的腸道中找到。研究結果顯示烏龜怪方蟹及雙齒近相手蟹都是拾荒者。
總括而言，利用DNA去研究動物食性的方法可以提供更多有關海洋甲殻類動物食性的詳細資料及提供準確的有關海洋甲殻類動物食性層次的資料。
Ho, Tsz Wai.
Thesis M.Phil. Chinese University of Hong Kong 2015.
Includes bibliographical references (leaves 65-85).
Abstracts also in Chinese.
Title from PDF title page (viewed on 12, October, 2016).
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
5
Ho, Junming. "Predicting pKa : theory and applications". Phd thesis, 2011. http://hdl.handle.net/1885/151205.
Testo completoAbstract (sommario):
This thesis is concerned with the development of computational procedures for making reliable estimates of general acidities in the gas and condensed phases, and also their application in the study of substituent effects on acids that are important in biology and synthesis. This could provide new insights into the mechanism of enzymatic reactions, as well as improve the control of the (e.g stereochemical) outcomes of certain synthetic reactions. The main focus of this thesis is on methods based on thermodynamic cycles which combine high-level ab initio gas phase energies with solvation free energies from continuum solvent models to yield the solution reaction free energy. Various thermodynamic cycles have been investigated, including the direct/absolute method, the proton exchange method as well as the hybrid cluster-continuum schemes that employ explicit solvent molecules. A thorough assessment of the performance of these cycles in predicting general aqueous acidities has been carried out to help identify a generally applicable approach for chemically accurate pKa prediction. Through this work, a reference-independent cluster-continuum proton exchange scheme has been developed which performed well for small and conformationally rigid acids of various functionalities. Additionally, a class of larger and conformationally flexible polyprotic acids, known as oxicams, has also been studied, and issues related to modeling of these more complex acids are highlighted.
Using the methods developed from this work, the effects of various amide nitrogen substituents on the stability of amide and peptide enolates in the gas and condensed phase were investigated. An unusual distal effect was discovered whereby N-electron-withdrawing substituents and hydrogen bonding to the amide nitrogen were found to significantly increase the acidity of the distal {u03B1}-carbon compared with that proximal to the amide nitrogen. The extent of the effect was such that the {u03B1}-carbon acidities of some N-substituted amides were found to exceed those of typical ketones. The origin of these substituent effects was examined and validated via experimental NMR kinetic measurements, and their relevance to the mechanism of isomerase-catalysed peptide epimerization is also discussed. Additionally, synthetic work has been carried out to demonstrate how these effects might be exploited in synthesis.
6
Young, Rowan Drury. "Alkane {u03C3}-complex observation with NMR and IR spectroscopies and the synthesis of rare carbido, carbon monosulfide and carbon disulfide complexes". Phd thesis, 2011. http://hdl.handle.net/1885/150873.
Testo completoAbstract (sommario):
This work describes the generation and observation of alkane {u03C3}-complexes by IR and NMR spectroscopies. Herein is reported the first tungsten alkane {u03C3}-complexes observed with NMR spectroscopy at low temperature. A series of tungsten alkane complexes of the type [({u03B7}{u2076}- C{u2086}Et{u2086})W(C0){u2082}(alkane)] (alkane = c-pentane, c-heptane, n-pentane, iso-butane, 2,2- dimethylbutane) were created by the photolysis of solutions of [({u03B7}{u2076}-C{u2086}Et{u2086})W(C0){u2083}] in alkane solvent below 168 K. {u00B9}H NMR data were obtained for all tungsten alkane complexes. {u00B9}{u00B3}C and {u00B9}{u2078}{u00B3}W NMR data are reported for experiments using either isotopically enriched substrates, or where the concentration of the alkane complex was high enough for observation using naturally abundant solvents and precursor complex. Larger JcH (cf. rhenium analogues) and small JwH values suggest that the tungsten complexes bind alkanes less strongly than rhenium complexes previously reported, consistent with their comparatively short lifetimes. In contrast to reports for rhenium-alkane binding modes where methylene coordination typically prevails, tungsten alkane complexes were found to bind exclusively through methy1 groups on n{u00AD} pentane and 2,2-dimethylbutane, perhaps reflecting the steric constraints imposed by the C{u2086}Et{u2086} co-ligand.
In addition to this, a series of rhenium precursor complexes were synthesised and evaluated as precursors for alkane coordination: [TpRe(C0){u2082}(CS)], [TpRe(C0){u2082}(PMe{u2083})], [nBuTpRe(C0){u2083}], [nBuTpRe(C0){u2082}(PMe{u2083})], [iPrOBpRe(C0){u2083}], [LoEtRe(C0){u2083}]. This library of complexes include the first examples of oxygen donor ligated alkane {u03C3}-complexes ([LoEtRe(C0){u2082}(alkane)], [iPrOBpRe(C0){u2082}(alkane)]), structurally isomeric alkane complexes ([N-trans{u00AD} iPrOBpRe(C0){u2082}(alkane), [O-trans-iPrOBpRe(C0){u2082}(alkane)]) and, what appears to be, the highly stable alkane {u03C3}-complex at comparatively high (~250 K) temperatures, [O-trans{u00AD}iPrOBpRe(C0){u2082}(c-C{u2085}H{u2081}{u2080})]. A correlation between the a-acidity of co-ligands with alkane stability was made possible by the diversity of the precursor complexes [nBuTpRe(C0){u2083}], [nBuTpRe(C0{u2082})(PMe{u2083})], [TpRe(C0){u2083}], [TpRe(C0){u2082}(CS)] and [TpRe(C0){u2082}(PMe{u2083})]. Alkane {u03C3}{u00AD} complexes formed with the photo-products of these complexes indicated that the 'TpRe(CO)L' (L = CS, CO, PMe{u2083}) fragment is less likely to insert into alkane ligands as compared to previously reported 'CpRe(CO)L' fragments. The findings also indicated that {u03C0}-neutral or weakly {u03C0}-acidic ligands tend to stabilise alkane complexes more than strongly {u03C0}-acidic co{u00AD} ligands on the 'TpRe(CO)L' fragment, with the order of longevity following PMe{u2083} >CO>CS.
During the course of this study, the novel bridging carbido species [CpRe(C0){u2082}]{u2082}({u03BC}-C) was synthesised. Its physical properties were probed analytically and computationally interpreted through DFT studies. The calculated characteristics were found to correlate strongly to observed experimental data. To probe the formation of the carbido species, [CpRe(C0){u2082}]{u2082}({u03BC}{u00AD}C), the novel model bridging carbon monosulfide complexes, [TpRe(C0){u2082}][CpRe(C0){u2082}]({u03BC}{u00AD}CS) and [TpRe(C0){u2082}({u03BC}-CS), and the bridging carbon disulfide complexes, [TpRe(C0){u2082}]{u2082}({u03BC}{u00AD}CS{u2082}) and [Tp*Re(C0){u2082}]{u2082}({u03BC}-CS{u2082}), were synthesised. It was found likely that both the bridging thiocarbonyl complexes were bridging in either a linear {u03C3}-C, {u03C3}-S fashion or a {u03BC}-C, {u03B7}{u00B2}-CS fashion, both of which are very rare. The bridging carbon disulfide complex [TpRe(C0){u2082}]{u2082}({u03BC}{u00AD} CS{u2082}) was found to decompose into, inter alia, a novel bridging disulfide species, [TpRe(C0){u2082}]{u2082}({u03C3},{u03C3} -S{u2082}), and the thiocarbonyl complex, [TpRe(C0){u2082}(CS)]. This thiocarbonyl was also produced intentionally for use in photochemical alkane complexation studies.
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"Correlates of physical activity and physical activity change among Hong Kong Chinese adolescent girls: a mixed method study". 2015. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1291581.
Testo completoAbstract (sommario):
Sun, Li.Thesis Ph.D. Chinese University of Hong Kong 2015.
Includes bibliographical references (leaves 254-286).
Abstracts also in Chinese; some appendixes in Chinese.
Title from PDF title page (viewed on 26, October, 2016).
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Correia, Catarina Silva. "Causalidade bidirecional entre o rácio de dívida pública e o crescimento económico: os casos de Áustria, Luxemburgo e Portugal". Master's thesis, 2019. http://hdl.handle.net/10071/20126.
Testo completoAbstract (sommario):
Esta dissertação pretende entender, fundamentalmente, a relação de causalidade entre o Rácio de Dívida Pública e o Crescimento Económico, em ambos os sentidos, para os casos da Áustria, Luxemburgo e Portugal. Para tal, estimou-se um modelo ARDL em time-series, para cada um dos países. Que representou um alargamento do período amostral em mais seis anos, face a De Vita et. al. (2018), com dados entre 1970 e 2020.
Todos os países da amostra foram severamente confrontados pela crise de 2008/09 e, ao longo desta crise, todos responderam e reagiram, ao longo do tempo, de forma distinta. O grande desafio do Eurosistema prende-se, sobretudo, pela crescente dificuldade sentida pelo Banco Central Europeu (BCE) em manter a estabilidade de preços. Como as decisões de política monetária são centradas no BCE, depois da grande crise, os países mais endividados não possuem uma margem de manobra suficiente para combater, através de políticas orçamentais, futuros choques.
Através da presente Dissertação encontraram-se evidências que sustentam as conclusões alcançadas no artigo original, para os três países. Foi encontrada evidência de causalidade bidirecional no caso da Áustria. E, para Portugal e Luxemburgo, causalidade apenas do Rácio da Dívida Pública para o Crescimento Económico.
Os resultados obtidos foram bastante satisfatórios porque se apresentam mais significativos do que os resultados obtidos no artigo original e, porque obtiveram as mesmas conclusões que De Vita et. al. (2018), no seu robusto estudo da causalidade.This Dissertation aims at understanding the casual relationship between the Public Debt Ratio and Economic Growth, in both directions, for Austria, Luxembourg and Portugal. In order to achieve this goal, ARDL models were estimated on a time-series analysis for each of the three euro-area countries. The sample period was extended by six years, with data gathered from1970 till 2020, compared to De Vita et. al. (2018). All countries had to face the 2008/2009 crisis and, throughout that period, they all responded and reacted to it, in different ways. The main distress of the Eurosystem relates to the increasing difficulty felt by the European Central Bank (ECB) in maintaining price stability. In this regard, the monetary policies are centered on the ECB and, after the major 2008/09 crisis, the most indebted countries did not have sufficient leeway to counter future shocks using financial policies. Along this dissertation, evidences that support the conclusions developed in the original article were corroborated for the three European countries. Moreover, in the case of Austria, evidences of bidirectional causality were found. Conversely, for Portugal and Luxembourg, it was only found causality of the Public Debt Ratio to the Economic Growth. This dissertation supports the same conclusions of De Vita et. al. (2018) on his effective and robust causality study. The results were generically good since they appear to be more significant than the ones obtained in the original article.
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"A study of socially dirty work: a conservation of resource framework". 2015. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1291483.
Testo completoAbstract (sommario):
Occupations involve regular contacts and associations with stigmatized or degraded people (e.g, policemen, nurses, social workers) are referred to as socially dirty work (Hughes, 1951; Ashforth & Kreiner, 1999; 2014).Socially dirty workers dealing with clients who are stigmatized by the society may encounter identity threat and negative societal perceptions towards their work (Kreiner, Ashforth & Sluss, 2006). Though the clients are stigmatized by the society, professional trainings of socially dirty workers advocate treating the clients as equal and respectable individuals. Hence, socially dirty workers face a big challenge to handle conflicting perceptions towards their clients– taking the professional side or the societal side.Drawing on the conservation of resource (COR) framework (Hobfoll, 1989; 1990), I examined the effect of work dirtiness on socially dirty worker’s job outcomes and investigated the effects of two contextual factors. In particular, I proposed a construct called the intensity of social work dirtiness (ISWD) –the extent to which clients are stigmatized by society: when the clients are more stigmatized by the society, socially dirty workers are more likely to experience resource loss and job strain. I also proposed employees’ work orientations (calling / job orientation) and professional-client relationship quality, would moderate the effect of intensity of social work dirtiness on employees’ stressful experience and work outcomes.
Data were collected at three time points from 16 hospitals in Mainland China. Results showed that the intensity of social work dirtiness was positively related to job strain and further affected employees’ job satisfaction, turnover intentions and psychological wellbeing. The moderating effects of work orientations and relationship quality were also supported in the analysis.
现代社会有许多职业需要经常接触污名化的客户 （如警察、护士、社工），这类职业被定义为社会型厌恶性工作(Hughes, 1951; Ashforth & Kreiner, 1999; 2014)。 社会型厌恶性工作者往往会遇到自我身份认同的难题和承受社会对他们的负面印象(Kreiner, Ashforth & Sluss, 2006)。 另一方面，这类型的工作者通常都接受了职业价值观的训练:要平等对待和尊重他们的客户。因此，社会型厌恶性工作者常常面临挑战：如何看待工作中接触的污名化客户 -- 是跟随社会大众的看法还是保持职业的看法。根据资源保存理论 (Hobfoll,1989)。当客户的污名化程度越严重，这类型工作者越可能承受更大的压力。
我提出员工的工作导向以及员工与污名化客户的关系会调节客户污名化程度对员工压力的影响。
我在中国内地的医院和香港的社工组织中收集了数据并作了详细分析，模型中的部分假设得到了验证和支持。
Wen, Shanshan.
Thesis Ph.D. Chinese University of Hong Kong 2015.
Includes bibliographical references (leaves 101-117).
Abstracts also in Chinese; appendix includes Chinese.
Title from PDF title page (viewed on 06, October, 2016).
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
Detailed summary in vernacular field only.
10
Son, Ngoc Ho. "Vulnerability and resilience to climate change in the northern mountainous region of Vietnam". Phd thesis, 2013. http://hdl.handle.net/1885/109286.
Testo completoAbstract (sommario):
Vietnam is one of the most vulnerable countries to climate change in the world. Therefore, adaptation is increasingly seen as both a necessary and urgent response. However, little is known in terms of who are the most vulnerable and how adaptation will take place. This thesis examines vulnerability and resilience to climate variability and change among communities in the northern mountainous region (NMR) of Vietnam which have been identified as among the most vulnerable communities in Vietnam. The conceptual framework of this thesis draws on the linkage between vulnerability, adaptive capacity and resilience through which to gain a better understanding of vulnerability, adaptation and resilience to climate change in Vietnam's NMR. I adopt a participatory approach to vulnerability assessment using community villages as case studies and using drought, flood and cold weather snaps as study events. The case study of the human-natural system is located in the Ba Be district of Bac Kan province in the NMR of Vietnam. Data were collected in the field from July 2009 to February 2010. Primary data in the form of interviews, focus groups and community workshops, and field observations, as well as insights from local and regional decision-makers, resource managers, scientists and secondary data in the form of published and unpublished literature are used to investigate how communities manage and experience climate-related risks. This study found that households and communities in the NMR are vulnerable to multiple stresses. The main socio-econmic determinants of local vulnerability include poverty, inequality, environmental degradation, ethnicity and community. The interaction of climate risks and local vulnerability factors threatens to overwhelm their resilience. Therefore, this thesis argues that adaptation needs to be rooted in both reducing vulnerability and increasing resilience of communities. The central approach is to increase the adaptive capacity of communities to become resilient in the context of change and uncertainty. It will be more fruitful if policy interventions focus on improving adaptive capacity of vulnerable communities rather than providing specific solutions to uncertain future climates. Addressing fundamental livelihood and development problems and strengthening social, economic, and environmental resilience will make it easier for local communities to respond to climatic risks, whether they are droughts, floods or cold snaps. Another key conclusion is that communities that learn to live with change and uncertainty become resilient. The insights emphasize the importance of learning, information exchange, reflection, innovation, and anticipation, all of which are key elements of the adaptation process.
Libri sul tema "H61 .h36 2012"
1
Andrew, French, e Westhead David R, a cura di. Bioinformatics. 2a ed. Milton Park, Abingdon [Oxon]: Taylor & Francis, 2010.
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2
M, Caddell Robert, e Knovel (Firm), a cura di. Metal Forming: Mechanics and Metallurgy. 4a ed. Cambridge: Cambridge University Press, 2011.
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3
Jinfu, Xu, a cura di. Bei tian tang yi wang de hai zi: Yi chang chong xian ai yu yong qi de mao xian zhi lü. Taibei Shi: Jiu zhou chu ban wen hua shi ye you xian gong si, 2007.
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4
Ethics in Qualitative Research: Controversies and Contexts. 2012.
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5
Ethics in Qualitative Research: Controversies and Contexts. SAGE Publications, Limited, 2012.
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6
Ethics in Qualitative Research: Controversies and Contexts. SAGE Publications, Limited, 2012.
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7
Realist Inquiry in Social Sciences. SAGE Publications, Limited, 2016.
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8
El hombre dinero. México, D.F: Sexto Piso, 2013.
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9
Helping Groups Heal: Leading Groups in the Process of Transformation. Templeton Press, 2017.
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10
Helping Groups Heal: Leading Groups in the Process of Transformation. Templeton Press, 2017.
Cerca il testo completoAtti di convegni sul tema "H61 .h36 2012"
1
Beimers, Els, Wilma Vink, Maraike A. Coenen e Sygrid van der Zee. "H31 Inactivity in patients with Huntington disease". In EHDN 2022 Plenary Meeting, Bologna, Italy, Abstracts. BMJ Publishing Group Ltd, 2022. http://dx.doi.org/10.1136/jnnp-2022-ehdn.195.
Testo completo
2
Schradt, Falk, Carolin Geitner, Christina Lang, Patrick Weydt, Sigurd Süßmuth, Beate Lindner-Pfleghar e G. Bernhard Landwehrmeyer. "H31 Dysphagia in huntington´s disease – an observational study". In EHDN 2018 Plenary Meeting, Vienna, Austria, Programme and Abstracts. BMJ Publishing Group Ltd, 2018. http://dx.doi.org/10.1136/jnnp-2018-ehdn.209.
Testo completo
3
Metters, Edmund, e Kenneth Leung. "Engaging the Public Through the Design of the Eastwick and Sweetwater Footbridge, London". In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.216.
Testo completoAbstract (sommario):
<p>Bridge H16 is foot and cycle bridge located within the Queen Elizbeth’s Olympic Park, London. It aims to provide the user with an engaging experience as they cross between the Park to Hackney Wick and Fish Island. This has been achieved through close collaboration between the designer and architects during the early design development. This paper explores the history of the site, the key drivers that defined the bridge, the consideration for the user experience as they cross the bridge, material choices and detailing to successfully deliver the new pedestrian and cycle bridge. It is recognised that the value of the bridge is best expressed through the positive social and economic impact to the developing area. The footbridge was opened to the public during the Summer of 2019. The second bridge; a road bridge, is constructed and due to open fully in the latter of 2021/early 2020. </p>
4
Wang, Kaikun, Qingluan He e Xianhui Li. "Numerical simulation of reheating system heat transfer coefficient with H63 brass alloy". In 2012 13th International Conference on Electronic Packaging Technology & High Density Packaging (ICEPT-HDP). IEEE, 2012. http://dx.doi.org/10.1109/icept-hdp.2012.6474673.
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Xupeng, Fang, Lu Ying e Wang Pu. "Quasi-Z source H6 photovoltaic inverter". In 2021 China Automation Congress (CAC). IEEE, 2021. http://dx.doi.org/10.1109/cac53003.2021.9728202.
Testo completo
6
Salanio, Desiree Marie, Sarah J. Tabrizi e Anne Arber. "H16 Advance care planning in huntington’s disease from the perspective of the multidisciplinary team". In EHDN 2018 Plenary Meeting, Vienna, Austria, Programme and Abstracts. BMJ Publishing Group Ltd, 2018. http://dx.doi.org/10.1136/jnnp-2018-ehdn.196.
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7
Das, Aparna, e G. Sheeja. "Photovoltaic H6-type transformerless inverter topology". In 2016 IEEE Annual India Conference (INDICON). IEEE, 2016. http://dx.doi.org/10.1109/indicon.2016.7839043.
Testo completo
8
Han, Changwan, Seonghun Park e Hanjong Kim. "Dynamic Response of Polyvinyl Alcohol(PVA)-Hydrogel With Different PVA Concentrations". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37811.
Testo completoAbstract (sommario):
Polyvinyl Alcohol-Hydrogel (PVA-H) is a biomaterial used for manufacturing contact lenses as well as for the medium of drug delivery. Previous studies have also showed that PVA-H exhibits superior biocompatibility with hydrophilic elastic nature. The aim of this study is to examine the possible usage of the PVA-H as cartilage replacement material by determining the static and dynamic mechanical properties of PVA-H with different ratios of polyvinyl alcohol (PVA) and phosphate buffered saline (PBS) compositions. Three different types of PVA-H specimens were made by changing the ratio of PVA (Sigma-Aldrich) and PBS (Sigma-Aldrich) compositions (PVA-H1: 10 wt% PVA and 90 wt% PBS; PVA-H2: 20 wt% PVA and 80 wt% PBS; PVA-H3: 25 wt% PVA, 45 wt% PBS and DMSO 30 wt%). Static and dynamic tensile tests under the loading frequencies of 0.001, 0.01, 0.1, and 1 Hz were carried out to measure the biomechanical properties of PVA-H1, -H2 within PBS solution and -H3 within PBS/ DMSO solution. The equilibrium Young’s moduli (EY) of PVA-H1, -H2 and -H3 evaluated from the static displacement control were 84.2±35.1 kPa (n=10), 254±32.2 kPa (n=10) and 588±38.9 kPa (n=5), respectively. The amplitudes of dynamic tensile moduli were varied from 86.3±33.4 kPa (n=10) at 0.001 Hz to 96.9±42.0 kPa (n=10) at 1 Hz for PVA-H1, from 282.7±26.4 kPa (n=10) at 0.001 Hz to 309.1±32.2 kPa (n=10) at 1 Hz for PVA-H2 and from 643.8±49.8 kPa (n=10) at 0.001 Hz to 747.7±67.7 kPa (n=5) at 1 Hz for PVA-H3. According to the current results, the frequency dependence of the magnitude of the dynamic modulus confirms the viscoelastic nature of PVA-H material. However, it can be noted that the dynamic modulus increases by up to a factor of 1.15 for PVA-H1, 1.22 for PVA-H2 and 1.27 for PVA-H3, showing insignificant viscoelasticity compared with that for cartilage. The result that static and dynamic moduli of PVA-H3 are larger than those of PVA-H1 and PVA-H2 also suggests that the amount of PVA composition in PVA-H plays an important role in improving both static and dynamic mechanical strengths of PVA-H material. The phase angle decreased from 5.2±2.1 ° at 0.001 Hz to −0.3±1.7 ° at 1 Hz for PVA-H1, from 5.6±0.6 ° at 0.001 Hz to −0.3±0.7 ° at 1 Hz for PVA-H2 and from 8.2±1.1 ° at 0.001 Hz to 0.7±0.7 ° at 1 Hz for PVA-H3.
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Das, Aparna, e G. Sheeja. "Photovoltaic H6-Type transformerless inverter topology". In 2017 Second International Conference on Electrical, Computer and Communication Technologies (ICECCT). IEEE, 2017. http://dx.doi.org/10.1109/icecct.2017.8118031.
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Barater, Davide, Giampaolo Buticchi, Carlo Concari, Giovanni Franceschini, Emre Gurpinar, Dipankar De e Alberto Castellazzi. "Performance analysis of UniTL-H6 inverter with SiC MOSFETs". In 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 ECCE-ASIA). IEEE, 2014. http://dx.doi.org/10.1109/ipec.2014.6869619.
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