Articles de revues : « Syzygie »

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Босик, Зоя. « Архетип "Syzygie" в структурі української весільної обрядовості ». Українознавство, n^o 3 (2009) : 230–35.

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Zapata, Miguel. « La Syzygie : une dynamique de séparation des contraires ». Cahiers jungiens de psychanalyse N° 70, n^o 3 (3 janvier 1991) : 26–43. http://dx.doi.org/10.3917/cjung.070.0026.

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Salamon, Mariusz A., Michat Zatoń et Przemysław Gorzelak. « Syzygial brachials from the upper Muschelkalk (Middle Triassic, Ladinian) of Poland and their implication for an early origin of comatulid crinoids ». Journal of Paleontology 82, n^o 3 (mai 2008) : 634–37. http://dx.doi.org/10.1666/06-108.1.

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According to Ubaghs (1978), syzygies are brachial articulations in which radiating ridges and furrows on the two joint faces oppose each other rather than interlock as in symplexies. Cryptosyzygies differ from syzygies by having very short ridges that may be replaced by rows of tubercles or granules, with a tendency toward irregular arrangement and disappearance. Among Triassic crinoids, only representatives of the orders Isocrinida Sieverts-Doreck, 1952 and Comatulida Clark, 1908 had cryptosyzygial or syzygial brachial articulation, respectively. According to Rasmussen (1978), among Isocrinidae the articulations of primibrachial 1 and 2 and secundibrachial 1 and 2 were cryptosyzygial or synarthrial (but see also comments in Simms, 1988a). Among Comatulida, syzygial articulations generally occur between brachials 3 and 4 and in more distal arm parts.

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Kreuzer, Martin, et Markus Kriegl. « Gröbner bases for syzygy modules of border bases ». Journal of Algebra and Its Applications 13, n^o 06 (20 avril 2014) : 1450003. http://dx.doi.org/10.1142/s0219498814500030.

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Given an order ideal 𝒪 and an 𝒪-border basis of a 0-dimensional polynomial ideal, it was shown by Huibregtse that the liftings of the neighbor syzygies (i.e. of the fundamental syzygies of neighboring border terms) form a system of generators for the syzygy module of the border basis. We elaborate on Huibregtse's proof and transform it into explicit algorithmic form. Based on this, we are able to exhibit explicit conditions on a module term ordering τ such that the liftings of the neighbor syzygies are in fact a τ-Gröbner basis. Finally, we construct term orderings satisfying these conditions in an explicit algorithmic way.

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Crous, P. W., M. J. Wingfield et W. B. Kendrick. « Foliicolous dematiaceous hyphomycetes from Syzygium cordatum ». Canadian Journal of Botany 73, n^o 2 (1 février 1995) : 224–34. http://dx.doi.org/10.1139/b95-025.

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During a study of foliicolous fungi on Syzygium cordatum in South Africa, several previously undescribed or unreported fungi were collected. Two new species of Anungitea, Anungitea caespitosa and Anungitea syzygii, are described from leaf litter. An additional four new taxa are also described, Chloridium constrictospora, Parasympodiella elongata, and Vermiculariopsiella spiralis from litter, and Podosporium etheldoidgeae from living leaves. Several saprobic fungi are reported for the first time in South Africa. The morphological variation occurring in Conoplea mangenotii is discussed. Key words: foliicolous fungi, Myrtaceae, systematics, Syzygium cordatum.

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MONTGOMERY, RICHARD. « The zero angular momentum, three-body problem : All but one solution has syzygies ». Ergodic Theory and Dynamical Systems 27, n^o 6 (décembre 2007) : 1933–46. http://dx.doi.org/10.1017/s0143385707000338.

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AbstractA syzygy in the three-body problem is a collinear instant. We prove that, with the exception of Lagrange’s solution, every solution to the zero angular momentum, Newtonian three-body problem suffers syzygies. The proof works for all mass ratios.

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Widodo, Pudji, et Jan Frits Veldkamp. « THE CONFUSING TAXONOMY AND NOMENCLATURE OF SYZYGIUM CONFUSUM COMPLEX (MYRTACEAE) ». REINWARDTIA 20, n^o 2 (29 décembre 2021) : 43–49. http://dx.doi.org/10.14203/reinwardtia.v20i2.4160.

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WIDODO, P. & VELDKAMP, J. F. 2021. The confusing taxonomy and nomenclature of Syzygiun confusum complex (Myrtaceae). Reinwardtia 20(2): 43‒49. ― The taxonomic and nomenclatural confusions surrounding the Syzygium confusum complex are elucidated. For that purpose, type specimens are designated and circumscriptions are presented for each species. Typifications, newly characterized descriptions and illustrations are presented for Syzygium korthalsii Widodo, S. confusum (Blume) Bakh.f., S. blumei (Steudel) Merr. & L.M.Perry, S. insigne (Blume) Merr. & L.M.Perry. The new species Syzygium sipirokense Widodo & Veldkamp is described.

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Ger, Roman. « Symmetry of Syzygies of a System of Functional Equations Defining a Ring Homomorphism ». Symmetry 13, n^o 12 (6 décembre 2021) : 2343. http://dx.doi.org/10.3390/sym13122343.

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I deal with an alienation problem for the system of two fundamental Cauchy functional equations with an unknown function f mapping a ring X into an integral domain Y and preserving binary operations of addition and multiplication, respectively. The resulting syzygies obtained by adding (resp. multiplying) these two equations side by side are discussed. The first of these two syzygies was first examined by Jean Dhombres in 1988 who proved that under some additional conditions concering the domain and range rings it forces f to be a ring homomorphism (alienation phenomenon). The novelty of the present paper is to look for sufficient conditions upon f solving the other syzygy to be alien.

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Watanabe, Junzo. « The syzygies of m-full ideals ». Mathematical Proceedings of the Cambridge Philosophical Society 109, n^o 1 (janvier 1991) : 7–13. http://dx.doi.org/10.1017/s0305004100069528.

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The concept of an m-full ideal was introduced and studied first by D. Rees (unpublished). In 1983, after having considered and discussed the concept with Professor Rees, the author showed some properties of these ideals in [11], and other authors also have obtained results related to them (cf. [5, 7]). The purpose of this paper is to seek syzygies of m-full ideals and try to analyze their structure. Let a be an m-full ideal, and ᾱ the reduction by a general element. Then it is possible to determine the number of basic syzygies of a in terms of ᾱ. We show that this leads to a method for obtaining a set of basic syzygies of a provided that one for ᾱ is known (Theorem 6). Moreover the entire structure of the syzygy module is known when it is reduced by a general element. It turns out that a/za is the direct sum of ᾱ and copies of the residue field (Corollary 7).

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HASHIMOTO, MITSUYASU. « CANONICAL AND -CANONICAL MODULES OF A NOETHERIAN ALGEBRA ». Nagoya Mathematical Journal 226 (20 octobre 2016) : 165–203. http://dx.doi.org/10.1017/nmj.2016.44.

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We define canonical and $n$-canonical modules of a module-finite algebra over a Noether commutative ring and study their basic properties. Using $n$-canonical modules, we generalize a theorem on $(n,C)$-syzygy by Araya and Iima which generalize a well-known theorem on syzygies by Evans and Griffith. Among others, we prove a noncommutative version of Aoyama’s theorem which states that a canonical module descends with respect to a flat local homomorphism.

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R.N., More, et D. M. Jadhav. « ETHNOMEDICINAL STUDIES OF SOME MYRTACEAE PLANTS FROM NANDED REGION OF MAHARASTRA ». International Journal of Advanced Research 11, n^o 03 (31 mars 2023) : 264–68. http://dx.doi.org/10.21474/ijar01/16417.

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Nanded is one of the most biodiversity rich region of Maharastra. This area is having deciduous regions known as Kinwat, Mahur and Shita-khandi forest. The regional peoples uses many traditional medicines for the treatments of various diseases. The aim of current research is to survey and documents ethno-medicinal usages of family Myrtaceae. For this data collection many time field visits were given. All the collected data and information were confirmed using available literature. Total six plants of Myrtaceae were reported in the study. Syzygiun cumini (Jamun), Psidium guajava L. (Guava), Eucalyptus globules (Nilgiri) are the common plants reported in survey including Callistemon citrinus ( Bottle brush), Syzygium aromaticum L. (Laong), and Syzygium jambos L. The plants reported in the present study were found to be used by local peoples for the treatments of different aliments.

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Thornhill, Andrew H., Geoff S. Hope, Lyn A. Craven et Michael D. Crisp. « Pollen morphology of the Myrtaceae. Part 2 : tribes Backhousieae, Melaleuceae, Metrosidereae, Osbornieae and Syzygieae ». Australian Journal of Botany 60, n^o 3 (2012) : 200. http://dx.doi.org/10.1071/bt11175.

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Pollen morphology of 16 genera and 101 species from the Myrtaceae tribes Backhousieae, Melaleuceae, Metrosidereae, Osbornieae and Syzygieae was surveyed using scanning electron microscopy (SEM) and light microscopy (LM). The most common pollen type observed in these tribes was parasyncolpate with arcuate or angular colpi, and a rugulate exine pattern. There was little size variation in observed pollen, except for larger pollen in tribe Melaleuceae. All Metrosideros pollen grains had apocolpial islands, as well as all Callistemon species viewed by LM. Choricarpia of tribe Backhousieae had pollen with a distinctive exine pattern. Dicolporate pollen were observed in two tribes, Metrosidereae (Tepualia) and Syzygieae (Acmena), and may be of systematic value. The dicolporate grains of these two genera were also easily distinguishable from each other by using size and pollen side shape as diagnostic characters. Two pollen types were observed within the genus Melaleuca, and a number of pollen types were observed within the species-rich genus Syzygium.

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Rota, Gian-Carlo. « Syzygies ». Advances in Mathematics 61, n^o 2 (août 1986) : 184. http://dx.doi.org/10.1016/0001-8708(86)90079-4.

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Reiner, V., et V. Welker. « Linear syzygies of Stanley-Reisner ideals ». MATHEMATICA SCANDINAVICA 89, n^o 1 (1 septembre 2001) : 117. http://dx.doi.org/10.7146/math.scand.a-14333.

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We give an elementary description of the maps in the linear strand of the minimal free resolution of a square-free monomial ideal, that is, the Stanley-Reisner ideal associated to a simplicial complex $\Delta$. The description is in terms of the homology of the canonical Alexander dual complex $\Delta^*$. As applications we are able to prove for monomial ideals and $j=1$ a conjecture of J. Herzog giving lower bounds on the number of $i$-syzygies in the linear strand of $j^{th}$-syzygy modules show that the maps in the linear strand can be written using only $\pm 1$ coefficients if $\Delta^*$ is a pseudomanifold exhibit an example where multigraded maps in the linear strand cannot be written using only $\pm 1$ coefficients compute the entire resolution explicitly when $\Delta^*$ is the complex of independent sets of a matroid

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Ela Amelia, Aryl Alfath Muhamad Iqbal, Siti Fatimah, Kurnia Afrianti et Dhiny Isma. « Effect of Doses of Clover Leaves Extract (Syzygium Aromaticum) on Death of Culex Sp Mosquito Larva ». Formosa Journal of Multidisciplinary Research 3, n^o 5 (1 juin 2024) : 1625–34. http://dx.doi.org/10.55927/fjmr.v3i5.9226.

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The clove plant (Syzygium Aromaticum) is a medicinal plant that has various uses. One of its uses is as a biopesticide (larvicide). Clove leaves contain toxic substances for insects such as several chemical compounds eugenol, saponins, flavonoids and tannins.This research is an experiment, in terms of the aim of this research it is classified as verification research with the aim of determining the effect of clove leaf extract (Syzygium Aromaticum) dosage on the death of Culex Sp mosquito larvae. In this study, 5 containers were used, each container contained 10 larvae out of 150 larvae, 4 containers were given clove leaf extract at a dose of 5ml, 10ml, 15ml and 20ml in 1 container as a control (without treatment). The data obtained was tested using the Anova test.Data from statistical analysis research between 0 milli control (without treatment) with a calculated F value of 7.867 and this significant value is smaller than α=0.05, so the research hypothesis is accepted, meaning that with 3 repetitions with doses of 5ml, 10ml, 15ml and 20ml there is a significant effect in killing Culex Sp larvae. Clove Leaf Extract (Syzygum Aromaticum) can inhibit the growth of Culex Sp mosquito larvae.

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O'Carroll, Liam, et Dorin Popescu. « Splitting Syzygies ». Journal of Algebra 228, n^o 2 (juin 2000) : 682–709. http://dx.doi.org/10.1006/jabr.2000.8295.

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Trianom, Bambang, Triwidodo Arwiyanto et Tri Joko. « Perancangan Primer Spesifik Subspesies Berbasis Gen Endoglukanase untuk Deteksi Ralstonia syzygii subsp. syzygii ». Jurnal Perlindungan Tanaman Indonesia 22, n^o 2 (15 novembre 2018) : 124. http://dx.doi.org/10.22146/jpti.32217.

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Ralstonia syzygii subsp. syzygii that belong to Ralstonia solanacearum species complex is the cause of Sumateran disease of clove. The disease was reported to cause widespread devastation on clove plantings in Indonesia. One of the control strategies is to reduce the spread of the disease through early detection on clove seedlings. The study aimed to design the specific primers based on endoglucanase (egl) gene of R. syzygii subsp. syzygii as a tool for early diagnosis. The analyses were conducted on development of specific primers design using egl sequences retrieved from GenBank, Polymerase Chain Reaction (PCR), primers sensitivity and specificity test. The pair of primers UGMRss-F (5’-GCTCACCATCGC CAAGGACAGCG-3’) and UGMRss-R (5’-TTCGATCGAACGCCTGGTTGAGC-3’) could amplify R. syzygii subsp. syzygii at ~378 base pairs with 0.8 ng/µl minimum concentration of DNA. The primers was specific to R. syzygii subsp. syzygii but not to other bacterial species even in the same phylotype. IntisariRalstonia syzygii subsp. syzygii merupakan bakteri yang termasuk dalam kelompok Ralstonia solanacearum species complex yang menyebabkan penyakit Sumatera pada tanaman cengkih. Penyakit ini menyebabkan kerugian yang sangat besar dan sampai saat ini belum ditemukan cara pengendalian yang efektif. Salah satu upaya pencegahan penyakit adalah melalui deteksi dini dan mencegah penyebaran penyakit melalui peredaran bibit dari areal yang endemis. Penelitian ini bertujuan untuk merancang primer spesifik berbasis gen endoglukanase (egl) sebagai upaya deteksi dini penyakit Sumatera. Analisis yang dilakukan meliputi desain primer spesifik dengan menggunakan data sekuens gen egl dari GenBank, Polymerase Chain Reaction (PCR), uji kepekaan primer dan uji kekhususan primer. Desain primer yang berhasil dirancang terdiri dari UGMRss-F (5’- GCTCACCATCGCCAAGGACAGCG-3’) dan UGMRss-R (5’-TTC GATCGAACGCCTGGTTGAGC-3’) dengan amplikon ~378 pasang basa. Pada konsentrasi DNA 0,8 ng/µl, secara peka R. syzygii subsp. syzygii masih dapat teramplifikasi dengan baik. Primer ini juga hanya dapat mendeteksi R. syzygii subsp. syzygii dan tidak untuk bakteri lain bahkan pada filotipe yang sama.

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I Gede Rheza Wisnu Bhadreswara et Ni Made Pitri Susanti. « Potensi Daun Salam (Syzygium polyanthum) Sebagai Antioksidan untuk Menangkal Radikal Bebas ». Prosiding Workshop dan Seminar Nasional Farmasi 2 (10 novembre 2023) : 620–30. http://dx.doi.org/10.24843/wsnf.2022.v02.p49.

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Dalam tubuh manusia, radikal bebas dapat berasal dari dua sumber. Radikal bebas yang bersumber dari luar tubuh seperti polusi udara, asap rokok dan radiasi dari perangkat elektronik seperti ponsel dan televisi. Radikal bebas dari dalam tubuh dapat secara alami terjadi akibat proses oksidasi enzimatik maupun autooksidasi. Antioksidan merupakan senyawa kimia yang dapat tercipta dalam tubuh manusia secara alami atau diperoleh dari luar tubuh melalui makanan, yang dapat menjadikan radikal bebas menjadi bentuk yang lebih stabil. Senyawa metabolit sekunder seperti fenolik, flavonoid, atau asam organik yang berasal dari bahan alam seperti daun salam dapat menjadi sumber antioksidan dari luar tubuh. Daun salam (Syzygum polyanthum) memiliki berbagai kandungan metabolit sekunder salah satunya yakni flavonoid. Daun ini dapat ditemukan dengan mudah dalam keseharian. Pada review artikel ini akan dibahas terkait potensi daun salam sebagai sumber antioksidan untuk penangkal radikal bebas. Metode yang digunakan pada pembuatan artikel review ini adalah penelusuran literatur nasional maupun internasional dalam 5 tahun terakhir sebanyak 6 jurnal. Berbagai penelitian menunjukkan bahwa ekstrak daun salam (Syzygium polyanthum) memiliki aktivitas antioksidan karena polifenolnya. Berdasarkan skrining fitokimia senyawa bioaktif yang banyak terkandung di dalam daun salam adalah flavonoid. Flavonoid adalah senyawa polifenol yang memiliki manfaat salah satunya adalah sebagai antioksidan. Dengan demikian, daun salam (Syzygium polyanthum) dapat memiliki potensi sebagai sumber antioksidan untuk menangkal radikal bebas.

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Wang, W., G. Q. Li, Q. L. Liu et S. F. Chen. « Cryphonectriaceae on Myrtales in China : phylogeny, host range, and pathogenicity ». Persoonia - Molecular Phylogeny and Evolution of Fungi 45, n^o 1 (31 décembre 2020) : 101–31. http://dx.doi.org/10.3767/persoonia.2020.45.04.

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Plantation-grown Eucalyptus (Myrtaceae) and other trees residing in the Myrtales have been widely planted in southern China. These fungal pathogens include species of Cryphonectriaceae that are well-known to cause stem and branch canker disease on Myrtales trees. During recent disease surveys in southern China, sporocarps with typical characteristics of Cryphonectriaceae were observed on the surfaces of cankers on the stems and branches of Myrtales trees. In this study, a total of 164 Cryphonectriaceae isolates were identified based on comparisons of DNA sequences of the partial conserved nuclear large subunit (LSU) ribosomal DNA, internal transcribed spacer (ITS) regions including the 5.8S gene of the ribosomal DNA operon, two regions of the β-tubulin (tub2/tub1) gene, and the translation elongation factor1-alpha (tef1) gene region, as well as their morphological characteristics. The results showed that eight species reside in four genera of Cryphonectriaceae occurring on the genera Eucalyptus, Melastoma (Melastomataceae), Psidium (Myrtaceae), Syzygium (Myrtaceae), and Terminalia (Combretaceae) in Myrtales. These fungal species include Chrysoporthe deuterocubensis, Celoporthe syzygii, Cel. eucalypti, Cel. guang-dongensis, Cel. cerciana, a new genus and two new species, as well as one new species of Aurifilum. These new taxa are hereby described as Parvosmorbus gen. nov., Par. eucalypti sp. nov., Par. guangdongensis sp. nov., and Aurifilum terminali sp. nov. Pathogenicity tests showed that the eight species of Cryphonectriaceae are pathogenic to two Eucalyptus hybrid seedlings, Melastoma sanguineum branches, and Psidium guajava and Syzygium jambos seedlings. Theoveralldatashowedthat Chr. deuterocubensis is the most aggressive, followed by Par. eucalypti. Significant differences in tolerance were observed between the two tested Eucalyptus hybrid genotypes, suggesting that disease-tolerant genotypes can be selected for disease management in the Eucalyptus industry.

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Arne Sikko, Svein. « Resolutions withnth Syzygies ». Communications in Algebra 23, n^o 10 (janvier 1995) : 3729–39. http://dx.doi.org/10.1080/00927879508825429.

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Montgomery, Richard. « Infinitely Many Syzygies ». Archive for Rational Mechanics and Analysis 164, n^o 4 (1 octobre 2002) : 311–40. http://dx.doi.org/10.1007/s00205-002-0211-z.

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Jothilingam, P. « Syzygies and ext ». Mathematische Zeitschrift 188, n^o 2 (juin 1985) : 279–82. http://dx.doi.org/10.1007/bf01304215.

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Rachniyom, Hathairat, Atsuko Matsumoto, Chantra Indananda, Kannika Duangmal, Yoko Takahashi et Arinthip Thamchaipenet. « Nonomuraea syzygii sp. nov., an endophytic actinomycete isolated from the roots of a jambolan plum tree (Syzygium cumini L. Skeels) ». International Journal of Systematic and Evolutionary Microbiology 65, Pt_4 (1 avril 2015) : 1234–40. http://dx.doi.org/10.1099/ijs.0.000085.

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A novel endophytic actinomycete, designated strain GKU 164T, was isolated from the roots of a jambolan plum tree (Syzygium cumini L. Skeels), collected at Khao Khitchakut National Park, Chantaburi province, Thailand. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain formed a distinct clade within the genus Nonomuraea , and was most closely related to Nonomuraea monospora PT708T (98.77 % 16S rRNA gene sequence similarity) and Nonomuraea thailandensis KC-061T (98.73 %). Strain GKU 164T formed a branched substrate and aerial hyphae that generated single spores with rough surfaces. The cell wall contained meso-diaminopimelic acid. The whole-cell sugars were madurose, galactose, mannose, ribose, rhamnose and glucose. The N-acyl type of muramic acid was acetyl. The predominant menaquinone was MK-9(H4) with minor amounts of MK-9(H6), MK-9(H2) and MK-9(H0). The phospholipid profile contained diphosphatidylglycerol, phosphatidylethanolamine, hydroxy-phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositolmannosides, phosphatidylmonomethylethanolamine, hydroxy-phosphatidylmonomethylethanolamine, an unidentified aminophosphoglycolipid and four unknown phospholipids. The major fatty acids were iso-C16 : 0 and 10-methyl C17 : 0. The genomic DNA G+C content was 70.4 mol%. Significant differences in the morphological, chemotaxonomical, and biochemical data together with DNA–DNA relatedness values between strain GKU 164T and type strains of closely related species, clearly demonstrated that strain GKU 164T represents a novel species of the genus Nonomuraea , for which the name Nonomuraea syzygii sp. nov. is proposed. The type strain is GKU 164T ( = BCC 70457T = NBRC 110400T).

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Rachniyom, Hathairat, Atsuko Matsumoto, Chantra Indananda, Kannika Duangmal, Yoko Takahashi et Arinthip Thamchaipenet. « Actinomadura syzygii sp. nov., an endophytic actinomycete isolated from the roots of a jambolan plum tree (Syzygium cumini L. Skeels) ». International Journal of Systematic and Evolutionary Microbiology 65, Pt_6 (1 juin 2015) : 1946–49. http://dx.doi.org/10.1099/ijs.0.000203.

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The taxonomic position of an endophytic actinomycete, strain GKU 157T, isolated from the roots of a jambolan plum tree (Syzygium cumini L. Skeels) collected at Khao Khitchakut National Park, Chantaburi province, Thailand, was determined using a polyphasic taxonomic approach. 16S rRNA gene sequence analysis revealed that strain GKU 157T belongs to the genus Actinomadura and formed a distinct phyletic line with Actinomadura chibensis NBRC 106107T (98.6 % similarity). Strain GKU 157T formed an extensively branched, non-fragmenting substrate mycelium and aerial hyphae that differentiated into hooked to short spiral chains of about 20 non-motile spores with a warty surface. The cell wall contained meso-diaminopimelic acid and the whole-cell sugars were galactose, glucose, madurose, mannose and ribose. The N-acyl type of muramic acid was acetyl. Mycolic acids were absent. The phospholipids included phosphatidylglycerol (PG), diphosphatidylglycerol (DPG), phosphatidylinositol (PI), phosphatidylinositolmannoside (PIM) and two unknown phospholipids (PLs). The major menaquinone was MK-9(H6) and the predominant fatty acids were C16:0, iso-C16:0, C18:1ω9c, C18:0 and 10-methyl C18:0 (tuberculostearic acid). The genomic DNA G+C content was 73.1 mol%. A combination of DNA–DNA hybridization results and significant differences from related species in cultural, physiological and chemical characteristics indicated that strain GKU 157T represents a novel species of the genus Actinomadura, for which the name Actinomadura syzygii sp. nov. is proposed. The type strain is GKU 157T ( = BCC 70456T = NBRC 110399T).

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Chijra, R. Ratianingsih et Hajar. « Model Matematika Penyebaran Penyakit Bakteri Pumbuluh Kayu Cengkeh (BPKC) ». JURNAL ILMIAH MATEMATIKA DAN TERAPAN 16, n^o 2 (29 janvier 2020) : 158–71. http://dx.doi.org/10.22487/2540766x.2019.v16.i2.14985.

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ABSTRACTClove wood vessels is one of the most damaging diseases of clove plants. This disease is caused by the bacterial Ralstonia Syzygii. the bacterial Rasltonia Syzygii lives in clove wood vessels. The bacterial Ralstonia Syzygii ispread through the Hindola Spp vector. The matemathical model that represents the spread of the disease isdeveloped from the SEI model (Suspectible, Exposed, Infected). The model gives 4 critical points 𝑇1, 𝑇2, 𝑇3 and 𝑇4 exist interaction between bacterial population Ralstonia Syzygii and Hindola Spp vector is less than the level of vulnerable clove recruitman divided by carrying capacity of Ralstonia Syzygii bacterial multiplied by Hindola Spp carrying capacity. The results of system stability analysis at the critical point using linearization give unstable three critical points 𝑇1, 𝑇2, 𝑇3which describes equilibrium conditions and a stable 𝑇4 critical point which describes endemic conditions. Numerical simulations are carried out to describe temporary disease-free conditions, and stable endemic conditionsKeywords : Clove Wood vessel Disease, Linierization Method, SEI Model

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Imas, Aisyah, Giyanto Giyanto, Meity Suradji Sinaga, Abdjad Asih Nawangsih et Gustan Pari. « Uji In Vitro Asap Cair terhadap Ralstonia syzygii subsp. celebesensis Penyebab Penyakit Darah pada Pisang ». Jurnal Fitopatologi Indonesia 14, n^o 4 (22 novembre 2018) : 145. http://dx.doi.org/10.14692/jfi.14.4.145.

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In Vitro Test of Liquid Smoke against Ralstonia syzygii subsp. Celebesensis, the Cause of Blood Disease in Bananas Blood disease, caused by Ralstonia syzygii subsp. celebesensis, is an important disease of banana plants in Indonesia. Several control methods have been done, but the result were not effective. Liquid smoke from wood waste is reported to be antimicrobial, but its use for controlling R. syzygii subsp. celebesensis has never been reported. Research was conducted to examine the ability of liquid smoke produced from coconut shell (CS-LS), pinecone (P-LS), and oil palm branch (OPB-LS) in inhibiting the growth of R. syzygii subsp. celebensensis in vitro and its effect on bacterial cell morphology. Efficacy test of liquid smoke was carried out by agar diffusion method and measurement of bacterial density by spectrophotometry with ʎ 600 nm. Observation of bacterial cell morphology was carried out by electron microscopy. The CS-LS, P-LS, and OPB-LS starting from 0.5% concentration showed inhibitory activity against R. syzygii subsp. celebesensis both on triphenyl tetrazolium chloride medium and luria bertani broth. Liquid smoke also caused damage to cell walls and cell membranes. Therefore, liquid smoke has the potential to be used as component in control method for R. syzygii subsp. celebesensis.

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Bueno, M., et A. A. V. Flores. « Tidal-amplitude rhythms of larval release : variable departure from presumed optimal timing among populations of the mottled shore crab ». Journal of the Marine Biological Association of the United Kingdom 90, n^o 5 (20 avril 2010) : 859–65. http://dx.doi.org/10.1017/s0025315410000044.

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It is widely assumed that optimal timing of larval release is of major importance to offspring survival, but the extent to which environmental factors entrain synchronous reproductive rhythms in natural populations is not well known. We sampled the broods of ovigerous females of the common shore crab Pachygrapsus transversus at both sheltered and exposed rocky shores interspersed along a 50-km coastline, during four different periods, to better assess inter-population differences of larval release timing and to test for the effect of wave action. Shore-specific patterns were consistent through time. Maximum release fell within 1 day around syzygies on all shores, which matched dates of maximum tidal amplitude. Within this very narrow range, populations at exposed shores anticipated hatching compared to those at sheltered areas, possibly due to mechanical stimulation by wave action. Average departures from syzygial release ranged consistently among shores from 2.4 to 3.3 days, but in this case we found no evidence for the effect of wave exposure. Therefore, processes varying at the scale of a few kilometres affect the precision of semilunar timing and may produce differences in the survival of recently hatched larvae. Understanding the underlying mechanisms causing departures from presumed optimal release timing is thus important for a more comprehensive evaluation of reproductive success of invertebrate populations.

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Shwaish, Mohammed Mosleh. « Antibacterial activity of Syzygium aromaticum against Klebsiella pneumoniae and Staphylococcus aureus isolated from urinary tract of dogs ». Al-Anbar Journal of Veterinary Sciences 16, n^o 1 (7 juin 2023) : 80–91. http://dx.doi.org/10.37940/ajvs.2023.16.1.10.

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This study was conducted to investigate the antibacterial efficacy of Syzygium aromaticum extracts, (clove) is one of the traditional plants that have been used to prevent urinary tract infection. Our study showed the antibacterial effectiveness of the extract of Syzygies aromaticum and reduced bacterial resistance resulting from the misuse of the antibiotic. Our extract has been used to prevent UTI because the pharmacological activities are attributed to plant constituents such as flavonoids, alkaloids, glycosides, saponins, terpenes, and other active ingredients. Cloves were extracted by hydroalcoholic extract (ethanol), which yield a reddish-brown plant extract powder with 20%. It was observed that the hydroalcoholic extract (ethanol)of cloves against Staphylococcus aureus appeared at a concentration of 6.25 mg/ml, and increased until reached concentrations of 200; 400 and 800 mg/ml resulting in a zone of inhibition (16.3, 17.5, 20.7mm), respectively, while inhibition was recorded against Klebsiella pneumoniae at a concentration of 50 mg/ml. At a concentration of 400 and 800 mg/ml, an increase in inhibition was observed for the zone (18.1, 22.3mm). It was inferred that the hydroalcoholic extract (ethanol)of cloves has a higher antibacterial effect against Staphylococcus aureus because the zones of inhibition began with lower concentrations compared to Klebsiella pneumonia because of their virulence factors in addition to bacterial resistance.

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Hage, Nohra, et Philippe Malbos. « Chinese syzygies by insertions ». Semigroup Forum 104, n^o 1 (3 janvier 2022) : 88–108. http://dx.doi.org/10.1007/s00233-021-10244-4.

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Dao, Hailong, Osamu Iyama, Srikanth B. Iyengar, Ryo Takahashi, Michael Wemyss et Yuji Yoshino. « Noncommutative resolutions using syzygies ». Bulletin of the London Mathematical Society 51, n^o 1 (10 octobre 2018) : 43–48. http://dx.doi.org/10.1112/blms.12210.

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Fløystad, Gunnar, Jason McCullough et Irena Peeva. « Three themes of syzygies ». Bulletin of the American Mathematical Society 53, n^o 3 (29 mars 2016) : 415–35. http://dx.doi.org/10.1090/bull/1533.

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Teixidor i Bigas, Montserrat. « Syzygies using vector bundles ». Transactions of the American Mathematical Society 359, n^o 2 (11 septembre 2006) : 897–908. http://dx.doi.org/10.1090/s0002-9947-06-03921-3.

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Campillo, Antonio, et Philippe Giménez. « Graphes arithmétiques et syzygies ». Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 324, n^o 3 (février 1997) : 313–16. http://dx.doi.org/10.1016/s0764-4442(99)80367-x.

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Wang, Haohao, et Ron Goldman. « Syzygies for translational surfaces ». Journal of Symbolic Computation 89 (novembre 2018) : 73–93. http://dx.doi.org/10.1016/j.jsc.2017.11.004.

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Pareschi, Giuseppe. « Syzygies of abelian varieties ». Journal of the American Mathematical Society 13, n^o 3 (10 avril 2000) : 651–64. http://dx.doi.org/10.1090/s0894-0347-00-00335-0.

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Hulek, Klaus, Sheldon Katz et Frank-Olaf Schreyer. « Cremona transformations and syzygies ». Mathematische Zeitschrift 209, n^o 1 (janvier 1992) : 419–43. http://dx.doi.org/10.1007/bf02570843.

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Park, Euisung. « Syzygies of projective bundles ». Journal of Pure and Applied Algebra 211, n^o 1 (octobre 2007) : 15–23. http://dx.doi.org/10.1016/j.jpaa.2006.12.010.

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Chenavier, Cyrille. « Syzygies among reduction operators ». Journal of Pure and Applied Algebra 223, n^o 2 (février 2019) : 721–37. http://dx.doi.org/10.1016/j.jpaa.2018.04.017.

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Sturmfels, Bernd, Alexander Postnikov et Isabella Novik. « Syzygies of oriented matroids ». Duke Mathematical Journal 111, n^o 2 (février 2002) : 287–317. http://dx.doi.org/10.1215/s0012-7094-02-11124-7.

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Hoshino, Mitsuo. « Syzygies and Gorenstein rings ». Archiv der Mathematik 55, n^o 4 (octobre 1990) : 355–60. http://dx.doi.org/10.1007/bf01198473.

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Ene, Viviana. « Syzygies of Hibi Rings ». Acta Mathematica Vietnamica 40, n^o 3 (22 mai 2015) : 403–46. http://dx.doi.org/10.1007/s40306-015-0117-0.

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Siagian, Debi Candra, Irda Safni et Lisnawita. « Prevalence and Incidence of Bacterial Wilt Disease (Ralstonia syzygii subsp. indonesiensis) on Tomato in Simpang Empat District Karo ». Indonesian Journal of Agricultural Research 5, n^o 3 (11 juin 2023) : 210–18. http://dx.doi.org/10.32734/injar.v5i03.9911.

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The major disease known as bacterial wilt, which affects tomato plants in Indonesia, is brought on by Ralstonia syzygii subsp. indonesiensis. In Simpang Empat District, Karo Regency, Indonesia, R. syzygii subsp. indonesiensis causes bacterial withery in tomato plants. The purpose of this study is to map its spread. This study is an experimental one that used the survey method to determine the prevalence of disease, the incidence of disease, and the pathogenic isolation of tomato plants at nine different locations throughout Simpang Empat District. The pathogen was isolated from the sample and identified in the lab as R. syzygii subsp. indonesiensis, according to the results. The outcome of the presence of bacterial wilt brought on by R. syzygii subsp. indonesiensis bacteria with various illness occurrences. At a proportion of disease incidence of 57.07%, Ndokum Siroga Location 1 in the community experienced the most disease.

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Nababan, T., Lisnawita et I. Safni. « In-vitro endophytic bacteria activity against Ralstonia syzygii subsp. indonesiensis, the causal agent of bacterial wilt disease in tomato (Solanum lycopersicum) to achieve sustainable agriculture ». IOP Conference Series : Earth and Environmental Science 1302, n^o 1 (1 février 2024) : 012042. http://dx.doi.org/10.1088/1755-1315/1302/1/012042.

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Abstract The bacterial wilt disease transmitted through soil, identified as Ralstonia syzygii subsp. indonesiensis, is a substantial vascular disease and major constraint in various Solanaceae plants. The use endophytic bacteria-as Arthrobacter sp. and Bacillus thuringiensis-is one approach to control this pathogen. In vitro test using the disc paper method was conducted to evaluate the compatibility of Arthrobacter sp. and B. thuringiensis, along with their inhibitory capabilities through secondary metabolite production, in suppressing the growth of R. syzygii subsp. indonesiensis. The results showed incompatibility among isolates of endophytic bacterial, consequently, both endophytic bacteria were capable suppressing the growth of the R. syzygii subsp. indonesiensis significantly. Arthrobacter sp. formed a larger inhibition zone compared to B. thuringiensis, and both endophytic bacteria can be candidate biological control agents to reduce pesticide use to control R. syzygii subsp. indonesiensis, which therefore achieving more environmentally agriculture sustainability.

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Safni, Irda, Ilse Cleenwerck, Paul De Vos, Mark Fegan, Lindsay Sly et Ulrike Kappler. « Polyphasic taxonomic revision of the Ralstonia solanacearum species complex : proposal to emend the descriptions of Ralstonia solanacearum and Ralstonia syzygii and reclassify current R. syzygii strains as Ralstonia syzygii subsp. syzygii subsp. nov., R. solanacearum phylotype IV strains as Ralstonia syzygii subsp. indonesiensis subsp. nov., banana blood disease bacterium strains as Ralstonia syzygii subsp. celebesensis subsp. nov. and R. solanacearum phylotype I and III strains as Ralstonia pseudosolanacearum sp. nov. » International Journal of Systematic and Evolutionary Microbiology 64, Pt_9 (1 septembre 2014) : 3087–103. http://dx.doi.org/10.1099/ijs.0.066712-0.

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The Ralstonia solanacearum species complex has long been recognized as a group of phenotypically diverse strains that can be subdivided into four phylotypes. Using a polyphasic taxonomic approach on an extensive set of strains, this study provides evidence for a taxonomic and nomenclatural revision of members of this complex. Data obtained from phylogenetic analysis of 16S-23S rRNA ITS gene sequences, 16S–23S rRNA intergenic spacer (ITS) region sequences and partial endoglucanase (egl) gene sequences and DNA–DNA hybridizations demonstrate that the R. solanacearum species complex comprises three genospecies. One of these includes the type strain of Ralstonia solanacearum and consists of strains of R. solanacearum phylotype II only. The second genospecies includes the type strain of Ralstonia syzygii and contains only phylotype IV strains. This genospecies is subdivided into three distinct groups, namely R. syzygii , the causal agent of Sumatra disease on clove trees in Indonesia, R. solanacearum phylotype IV strains isolated from different host plants mostly from Indonesia, and strains of the blood disease bacterium (BDB), the causal agent of the banana blood disease, a bacterial wilt disease in Indonesia that affects bananas and plantains. The last genospecies is composed of R. solanacearum strains that belong to phylotypes I and III. As these genospecies are also supported by phenotypic data that allow the differentiation of the three genospecies, the following taxonomic proposals are made: emendation of the descriptions of Ralstonia solanacearum and Ralstonia syzygii and descriptions of Ralstonia syzygii subsp. nov. (type strain R 001T = LMG 10661T = DSM 7385T) for the current R. syzygii strains, Ralstonia syzygii subsp. indonesiensis subsp. nov. (type strain UQRS 464T = LMG 27703T = DSM 27478T) for the current R. solanacearum phylotype IV strains, Ralstonia syzygii subsp. celebesensis subsp. nov. (type strain UQRS 627T = LMG 27706T = DSM 27477T) for the BDB strains and Ralstonia pseudosolanacearum sp. nov. (type strain UQRS 461T = LMG 9673T = NCPPB 1029T) for the strains of R. solanacearum phylotypes I and III.

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Inamdar, S. P. « On syzygies of projective varieties ». Pacific Journal of Mathematics 177, n^o 1 (1 janvier 1997) : 71–76. http://dx.doi.org/10.2140/pjm.1997.177.71.

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Berkesch, Christine. « The Geometry of Toric Syzygies ». Notices of the American Mathematical Society 67, n^o 04 (1 avril 2020) : 1. http://dx.doi.org/10.1090/noti2068.

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Manjunath, Madhusudan. « Syzygies over the polytope semiring ». Journal of the London Mathematical Society 96, n^o 2 (3 août 2017) : 482–500. http://dx.doi.org/10.1112/jlms.12065.

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Rubei, Elena. « On syzygies of Segre embeddings ». Proceedings of the American Mathematical Society 130, n^o 12 (9 mai 2002) : 3483–93. http://dx.doi.org/10.1090/s0002-9939-02-06597-8.

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Malheiro, António, et José Francisco Reis. « Identification of proofs via syzygies ». Philosophical Transactions of the Royal Society A : Mathematical, Physical and Engineering Sciences 377, n^o 2140 (21 janvier 2019) : 20180275. http://dx.doi.org/10.1098/rsta.2018.0275.

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In 1900, Hilbert gave a lecture at the International Congress of Mathematicians in Paris, for which he prepared 23 problems that mathematicians should solve during the twentieth century. It was found that there was a note on a 24th problem focusing on the problem of simplicity of proofs. One of the lines of research that was generated from this problem was the identification of proofs. In this article, we present a possible method for exploring the identification of proofs based on the membership problem original from the theory of polynomial rings. To show this, we start by giving a complete worked-out example of a membership problem, that is the problem of checking if a given polynomial belongs to an ideal generated by finitely many polynomials. This problem can be solved by considering Gröbner bases and the corresponding reductions. Each reduction is a simplification of the polynomial and it corresponds to a rewriting step. In proving that a polynomial is a member of an ideal, a rewriting process is used, and many different such processes can be considered. To better illustrate this, we consider a graph where each rewriting step corresponds to an edge, and thus a path corresponds to a rewriting process. In this paper, we consider the identification of paths, within the context of the membership problem, to propose a criterion of identification of proofs. This article is part of the theme issue ‘The notion of ‘simple proof’ - Hilbert's 24th problem’.

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Greco, Ornella, et Ivan Martino. « Syzygies of the Veronese Modules ». Communications in Algebra 44, n^o 9 (19 mai 2016) : 3890–906. http://dx.doi.org/10.1080/00927872.2015.1027389.

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