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1290篇 您的检索式:作者名="I. V."
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1Evaluation of the suitability of a partially defatted black soldier fly (Hermetia illucens L.) larvae meal as ingredient for rainbow trout (Oncorhynchus mykiss Walbaum) diets显示文摘Background: Two trials were performed to evaluate a partially defatted Hermetia illucens(HI) larvae meal as potential feed ingredient in rainbow trout(Oncorhynchus mykiss Walbaum) diets. In the first trial, 360 trout(178.9 ± 9.8 g of mean initial body weight) were randomly divided into three experimental groups(4 tanks/treatment, 30 fish/tank). The fish were fed for 78 days with isonitrogenous, isolipidic and isoenergetic diets containing increasing levels of HI, on as fed basis: 0%(HI0, control diet), 25%(HI25) and 50%(HI50) of fish meal substitution, corresponding to dietary inclusion levels of 0, 20% and 40%. In the second trial, 36 trout(4 tanks/treatment, 3 fish/tank) were used to evaluate the in vivo apparent digestibility coefficients(ADC) of the same diets used in the first trial.Results: Survival, growth performance, condition factor, somatic indexes, and dorsal fillet physical quality parameters were not affected by diet. The highest dietary inclusion of HI larvae meal increased dry matter and ether extract contents of trout dorsal fillet. The use of HI larvae meal induced a decrease of valuable polyunsaturated fatty acids(PUFA) even if differences were only reported at the highest level of HI inclusion. The insect meal worsened the lipids health indexes of the same muscle. Dietary inclusion of insect meal did not alter the villus height of the fish. No differences were found among treatments in relation to ADC of ether extract and gross energy, while ADC of dry matter and crude protein were higher in HI25 if compared to HI50.Conclusions: The obtained results showed that a partially defatted HI larvae meal can be used as feed ingredient in trout diets up to 40% of inclusion level without impacting survival, growth performance, condition factor, somatic indexes, dorsal fillet physical quality parameters, and intestinal morphology of the fish. However, further investigations on specific feeding strategies and diet formulations are needed to limit the observed negative effects of the insect meal on the FA composition of dorsal muscle.M. Renna A. Schiavone F. Gai S. Dabbou C. Lussiana V. Malfatto M. Prearo M. T. Capucchio I. Biasato E. Biasibetti M. De Marco A. Brugiapaglia I. Zoccarato L. Gasco 2017Journal of Animal Science and Biotechnology2017,8,4:32
2Reconstruction of May——July precipitation in the north Helan Mountain, Inner Mongolia since A.D. 1726 from tree-ring late-wood widths显示文摘By analyzing statistical characteristics of five tree-ring standard chronologies, early-wood ring width (EWW), late-wood ring width (LWW), total ring width (TRW), minimum early-wood density (MinD), maximum late-wood density (MaxD) and, their climatic response re-spectively, we reconstructed the May to July precipitation using late-wood ring width (LWW) over the north Helan Mountain since A.D. 1726. The explained variance is 42% (R2adj = 41%, F = 31.46, p < 0.000001). After 11-a moving average, the explained variance reaches 82% (F = 156.9, p < 0.05). On the decadal scale, the rainfall reconstruction of the northern Helan Mountain displays a quite similar variation pattern with that of the April to early July precipitation in Baiyinaobao, east of Inner Mongolia for the last 150 years. It may reflect the intensity variation of the East Asia Summer Monsoon front to a certain extent. Spectrum analysis shows 11-a and 22-a periodicities in the May to July precipitation reconstruction at the north Helan Mountain.LIU Yu SHI Jiangfeng V. Shishov E. Vaganov YANG Yinke CAI Qiufang SUN Junyan WANG Lei I. Djanseitov 2004Chinese Science Bulletin2004,49,4:29
3Solution processed MoS2-PVA composite for subbandgap mode-locking of a wideband tunable ultrafast Er:fiber laser显示文摘我们制作自立的很少层铝二硫化物(瞬间 < 潜水艇 class= “ a-plus-plus ” > 由化学上太古的 MoS2 晶体和使用的液体阶段脱落合成的 2 )-polymer 这表明一条宽带悦耳, ultrafast 锁模式的纤维激光。稳定,微微秒脉搏,从 1,535 nm 悦耳到 1,565 nm,被产生,相应于在瞬间下面的光子精力 < 潜水艇 class= “ a-plus-plus ” > 2 材料 bandgap。这些结果贡献学习转变金属 dichalcogenides 的非线性的光性质的工作的成长身体为 ultrafast photonic 应用的现在的新机会。Meng Zhang Richard C. T. Howe Robert I. Woodward Edmund J. R. Kelleher Felice Torrisi Guohua Hu Sergei V. Popov J. Roy Taylor Tawfique Hasan 2015Nano Research2015,8,5:13
4Effects of phosphodiesterase 5 inhibitors on sperm parameters and fertilizing capacity显示文摘这评论研究的目的是阐明效果那磷酸二酯酶 5 (PDE5 ) 禁止者在精子上施加活动性, capacitation 过程并且在他们使肥沃的能力上卵母细胞。第二个送信人系统象 cAMP/adenylate cyclase (交流) 那样系统和 cGMP/guanylate cyclase (GC ) 系统看起来调整精子功能。intracytosolic 营地的增加的层次导致精子活动性和生存能力的改进。由氮的氧化物的低剂量的 GC 的刺激(没有) 导致精子活动性的改进或维护,而更高的集中在精子参数上有不利效果。几在活体内和在试管内研究被执行了以便检验 PDE5 禁止者是否断然或否定地影响精子参数和精子使肥沃能力。这些研究的结果是争论的。一些这些研究不在从与 PDE5 禁止者被对待的人收集的精子的活动性,生存能力,和形态学上表明 PDE5 禁止者的重要效果。在另一方面,几研究在精子活动性上表明 PDE5 禁止者的积极效果在活体内和在试管内。sildenafil 柠檬酸盐的在试管内研究随在除 PDE5 以外的 PDE 对碘氧基苯甲醚上建议 sildenafil 柠檬酸盐的一个禁止的行动的细胞内部的营地的增加在精子活动性上表明 stimulatory 效果。在另一方面, tadalafil 的行动看起来在 PDE11 上与这混合物的禁止的效果被联系。在在一个每日的基础与 vardenafil 对待的人的在活体内研究每精液,量的精子活动性,和质的精子活动性表明了精子的一个显著地更大的全部的数字;vardenafil 管理提高前列腺的能分泌的功能并且随后增加精子的质、量的活动性,这被建议了。PDE5 禁止者在精子参数上施加的效果可以导致帮助繁殖技术(艺术) 的结果的改进程序。在未来 PDE5,禁止者可能为男不孕的缓和用作附属物 therapeutical 代理人。F. Dimitriadis D. Giannakis N. Pardalidis K. Zikopoulos E. Paraskevaidis N. Giotitsas V. Kalaboki P.Tsounapi D. Baltogiannis Georgiou M.Saito T.Watanabe I. Miyagawa N.Sofildtis 2008Asian Journal of Andrology2008,10,1:11
5Use of Sorghum Crops for in Situ Phytoremediation of Polluted Soils显示文摘V. R. Angelova R. V. Ivanova V. A. Delibaltova K. I. Ivanov 2011Journal of Agricultural Science and Technology(A)2011,1,5:10
6Late Cretaceous biota and the Cretaceous-Paleogene(K--Pg)Boundary in Jiayin of Heilongjiang,China显示文摘An international cooperative study of the Late Cretaceous biota and non-marine strata including the Cretaceous-Paleogene(K--Pg) boundary in Jiayin near the Heilongjiang River,China during 2002-2010,is summarized in this paper. The strata includes the Upper Cretaceous Yong'ancun-,Taipinglinchang-,Yuliang-zi-,and Furao formations,and the Paleocence Wuyun Formation consisting of Baoshantou Member and a Coalbearing Member. Seven palynological assemblages from Santonian to Paleocene are recognized,which is used for definition of the K--Pg boundary. Through the palynological analysis of three drilled boreholes (XHY-2005,2006,2008) in Xiaoheyan of western Jiayin,the K--Pg boundary is defined within 20. 00-20. 05 m in the borehole XHY-2006 (as a standard boundary) which is just between the top of Furao Formation (late Maasterichtian) and the base of Baishantou Member (early Danian) . These new research results are supported by paleo- magnetic,geochemical and other analyses,also. On the other hand,the presence of eight taxa of Maasterichtian dinosaurs (mostly hadrosaurids) have been recognized by the authors; and two mega-plant assemblages from the Yong'ancun Fm (Santonian) to Taipinglinchang Fm (Campanian) are confirmed. These research a-chievements indicate that the Upper Cretaceous-Paleocene in Jiayin can be well correlated to the strata in the neighboring Zeya-Bureja basin,Russia. The K--Pg boundary definited in Jiayin is the first well documented non-marine K--Pg boundary in China. Also the related paleoclimate,paleoenvironment and the mass extinctions in this area during the Cretaceous-Paleocene transition are also discussed.Sun G. Akhmetiev M. Markevich V. Ashraf A. R. Bugdaeva E. Godefroit P. Bolotsky Yu. Dong Z. M. Golovneva L. Yang H. X. Sun C. L. Sun Y. W. Quan C. Kodrul T. Kezina T. Johnson K. Nishida H Dilcher D. L. Harding I. Chen Y. J. 2011Global Geology2011,14,3:9
7The forecast of seasonal precipitation trend at the north Helan Mountain and Baiyinaobao regions, Inner Mongolia for the next 20 years显示文摘By using Caterpillar-SSA analysis method, through the process of embedding, singular value decompo-sition, grouping and diagonal averaging, the seasonal pre-cipitation trend at north Helan Mountain and Baiyinaobo regions, Inner Mongolia for the next 20 years is forecasted. The results show an increasing precipitation trend from 1992 to 2004. In the subsequent decade the precipitation should reduce quickly, and it will reach a minimum near 2012 to 2014 in both regions. The drought caused by the decrease of the precipitation from May to July in the north Helan Mountain area during the period of 2013—2014 is probably quite similar to that around 1929. Further, the period of pre-cipitation gradual increase follows in the researched regions.LIU Yu V. Shishov SHI Jiangfeng E. Vaganov SUN Junyan CAI Qiufang I. Djanseitov AN Zhisheng 2004Chinese Science Bulletin2004,49,4:8
8运用《国际功能、残疾和健康分类》比较脑卒中康复功能性结局测量的内容显示文摘目的确定常用于脑卒中康复结局测量内容,主要是关于活动和参与的,并与《国际功能、残疾和健康分类》(ICF)对照。方法将以下量表的结构与ICF建立联系:Barthel指数(BI)、Berg平衡功能量表(BBS)、Chedoke Mc Master脑卒中评定量表(CMSA)、Euroqol-5D欧洲生活质量量表(EQ5D)、FI M功能独立性测量、Frenchay活动指数、Nottingham健康测验(NHP)、Rankin量表(RS)、Rivermead动作测量(RMA)、Rivermead移动指数(RMI)、中风影响测验-30(SASIP30)、医学结局研究简表(SF36),卒中影响量表(SIS)、脑卒中特定生存质量量表(SSQOL)和站立行走测验(TUG)。结果功能性结局测量中的绝大多数结构可与ICF分类建立联系。这些测量工具可以归入活动和参与的成份,活动是测量工具中最常见的类目内容。虽然测量工具的选择是基于它们主要关注的'活动'与'参与'内容,但有27%的结构属于身体功能类目,也有大约10%的结构与ICF不相关。结论在脑卒中的康复中,ICF是一种有效的工具来检测和比较脑卒中各测量工具的内容。这些内容上的比较使得临床医生和研究者们选择最符合他们兴趣和要求的测量。V. P. M. SCHEPERS M. KETELAAR I. G. L. VAN DE PORT J. M. A. VISSER-MEIL Y & E. LINDEMAN 王朴(译) 李沁燚(译) 邱卓英(审校) 吴弦光(审校) 2008中国康复理论与实践2008,14,12:6
9Expression of Acyl-lipid 12-desaturase Gene in Prokaryotic and Eukaryotic Cells and Its Effect on Cold Stress Tolerance of Potato显示文摘We report the expression profile of acyl-lipid 12-desaturase (desA) gene from Synechocystis sp. PCC6803 and its effect on cell membrane lipid composition and cold tolerance in prokaryotic (Escherichia coli) and eukaryotic (Solanum tuberosum) cells. For this purpose, a hybrid of desA and reporter gene encoding thermostable lichenase (licBM3) was constructed and used to transform these cells. The expression of this hybrid gene was measured using qualitative (Petri dish test, electrophoregram and zymogram) and quantitative methods (spectrometry and gas liquid chromatography assays). The maximum level of linoleic acid in the bacterial cells containing hybrid gene was 1.9% of total fatty acids. Cold stress tolerance assays using plant damage index and growth parameters showed that cold tolerance was enhanced in primary transgenic lines because of increased unsaturated fatty acid concentration in their lipids. The greatest content of 18:2 and 18:3 fatty acids in primary transgenic plants was observed for lines 2 (73%) and 3 (41%). Finally, our results showed that desaturase could enhance tolerance to cold stress in potato, and desaturase and lichenase retain their functionality in the structure of the hybrid protein where the enzymatic activity of target gene product was higher than in the case of reporter lichenase gene absence in the construction.Reza Maali Amiri Natalia O. Yur'eva Khristina R. Shimshilashvili Irina V. Goldenkova-Pavlova Vasiliy P. Pchelkin Elmira I. Kuznitsova Vladimir D. Tsydendambaev Tamara I. Trunova Dmitry A. Los Gholamreza Salehi Jouzani Alexander M. Nosov 2010Journal of Integrative Plant Biology2010,52,3:6
10Evaluation of combination gene therapy with PTEN and antisense hTERT for malignant glioma in vitro and xenografts显示文摘You, Y. P. Geng, X. Z. Zhao, P. FU, Z. Wang, C. Z. Chao, S. W. Liu, N. Lu, A. L. Gardner, K. Pu, P. Y. Kong, C. S. Ge, Y. Judge, S. I. V. Li, Q. D. Q 2007南京医科大学学报(自然科学版)2007,27,5:6
11Direct vapor phase growth process and robust photoluminescence properties of large area MoS2 layers显示文摘在那里在收获设备的光电子和精力的领域里在铝二硫化物的使用一直在种研究兴趣,由它的 indirect-to-direct 乐队差距 tunability 的优点。然而,获得大区域瞬间的薄电影 < 潜水艇 class= “ a-plus-plus ” > 为未来设备应用的 2 仍然是挑战。在现在的学习,先锋的数量(S 和哞 < 潜水艇 class= “ a-plus-plus ” > 3 ) 系统地被改变以便优化高度水晶、大的区域瞬间的生长 < 潜水艇 class= “ a-plus-plus ” > 由化学蒸汽免职方法的 2 层。先锋的数量的小心的控制在大区域的合成被发现到关键因素高度水晶的薄片。层的厚度被拉曼光谱学和原子力量显微镜学证实。光性质和化学作文被光致发光(PL ) 和 X 光检查光电子光谱学学习。在 1.82 eV 的强壮的直接激子的排出物的出现(A 激子,与 55 个 thout 事件的规范的 PL 紧张[1.84 ??? 隰酐鱠? 鎄颩 ???? 頿?? 鲰??V. Senthilkumar Le C. Tam Yong Soo Kim Yumin Sim Maeng-Je Seong Joon. I. Jang 2014Nano Research2014,7,12:6
12新疆植物区系新资料(英文)显示文摘报道了采自新疆阿尔泰山地区的1个中国新记录属假糖芥属Rhammatophyllum O. E. Schulz, 6个中国新记录种——渐尖岩蕨Woodsia acuminata (Fomin) Sipl.、短命繁缕Stellaria alsinoides Boiss. & Buhse、假糖芥Rh. erysimoides (Kar. & Kir.) Al-Shehbaz & O. Appel、克氏鹤虱Lappula krylovii Ovczinnikova, A. I. Pjak & A. L. Ebel、肝色柳穿鱼Linaria hepatica Bunge和佐氏新缬草Valerianella szovitsiana Fisch. & Mey.。Dmitry A. GERMAN Alexander I. SHMAKOV 张宪春 陈文俐 Sergey V. SMIRNOV 谢磊 Rudolph V. KAMELIN 王健 2006植物分类学报2006,44,5:6
13Evanescent field absorption sensor for detection of copper (Ⅱ) in water using multimode optical fiber显示文摘The evanescent field absorption sensor for the detection of trace amount of copper(II) in water is experimentally analyzed with the etched step index multimode plastic clad silica(PCS) fiber.The designed sensor is sensitive to copper(II) content in water with a range up to 250 ppm.U. S. Raikar V. K. Kulkarni A. S. Lalasangi I. I. Pattanashetti J.F. Akki 2009Optoelectronics Letters2009,5,3:6
14Current Zika virus epidemiology and recent epidemics显示文摘S. Ioos H.-P. Mallet I. Leparc Goffart V. Gauthier T. Cardoso M. Herida 2014Médecine et Maladies Infectieuses2014,,:5
15Choice of conodont Idiognathodus simulator (sensu stricto) as the event marker for the base of the global Gzhelian Stage (Upper Pennsylvanian Series, Carboniferous System)显示文摘Philip H. Heckel Aleksandr S. Alekseev James E. Barrick Darwin R. Boardman Natalya V. Goreva Tatiana N. Isakova Tamara I. Nemyrovska Katsumi Ueno Elisa Villa David M. Work 2008Episodes2008,31,3:5
16中国北方黄土高原地区黄土的微结构模型(详细摘要)显示文摘试样为取自中国北方黄土高原标准剖面①中的马兰(Q3)、离石(Q2)、午城(Q1)以及次生的洪积冲积(Q4)黄土.各方面成功的配合与多手段的综合性研究使我们能对黄土的微结构模型有了概念,能分析结构特征对黄土某些性质的影响,并可用来解释已提出的有关成因...Ryashchenko T. G. Akulova V. V. Solokov V. N. Grigorieva I. J. 段汝文 张振中 孙崇绍 1999西北地震学报1999,21,1:5
17New Hybrid Copper Composite Materials Based on Carbon Nanostructures显示文摘Tatyana S. Koltsova Larisa I. Nasibulina Ilya V. Anoshkin Vasily V. Mishin Esko I. Kauppinen Oleg V.Tolochko Albert G. Nasibulin 2012材料科学与工程(中英文B版)2012,2,4:5
18Siberian silkmoth outbreaks surpassed geoclimatic barrier in Siberian Mountains显示文摘Siberian silkmoth(SSM,Dendrolimus sibiricus Tschetv.)is the most important defoliator of Siberian pine(Pinus sibirica Du Tour)and fir(Abies sibirica Ledeb.)stands.Warming-induced SSM outbreaks are one of the major driving factors of successions within the taiga zone.It is suggested that climate change impacted the SSM range and life cycle.We analyzed the migration of alpine and northerly SSM outbreak boundaries in Siberia and the impact of the climate variables and topography on the outbreak dynamics.We used time-series scenes(multispectral data,and vegetation indexes EVI and NDII)in combination with field studies,climate variables,and GIS techniques.We found that SSM outbreaks in the area of alpine boundary shifted about 370 m uphill since the mid of 1950.The outbreak onset was promoted by increased dryness and active temperatures and decreased root zone moisture content in the spring-early summer period.The terrain topography strongly affected SSM outbreak onset and dynamics.Initially,the outbreak was located at the middle elevations on the gentle concave southeastern slopes,which are the favorable insect habitats between outbreaks.Then the outbreak expanded uphill and downhill,to steeper slopes,and both concave and convex terrains.Alongside with elevation range expansion,SSM surpassed its northern historical outbreak boundary:the potential outbreaks’boundary moved about 300 km northward.Climate warming contributes to SSM migration into former outbreak free conifer stands located in highlands and at northern latitudes.KHARUK Viacheslav I. IM Sergei T. SOLDATOV Vladimir V. 2020Journal of Mountain Science2020,17,8:4
19Histological Studies of Atrazine Toxicity on the Thyroid Gland in Rats显示文摘Little is known about the toxic activity of the atrazine (a herbicide, commonly used in agricultural production) on the thyroid gland. In this study the compound was administered orally in female albino rats at sublethal exposure equivalent to 0.2 LD50 doses for 6 and 12 days. At termination of dosing the anesthetized animals were killed and blood was drawn for the determination of serum triiodothyronine (T3) and thyroxin (T4). A dose-dependent decrease of serum T3 concentration was observed in all the groups (control: 0.57 nmol·L-1; 6 days: 0.35 nmol·L-1; 12 days: 0.21 nmol·L-1). The thyroid gland was examined light-microscopically. Bouin’s solution-fixed thyroids were embedded in paraffin and sections cut at 6 μm, stained separately with toluidine blue according to Slinchenko’s method. Histologically in experimental groups epithelium featured small cuboidal cells and occasional structures of the follicles confluence within epitheliomers. A dose-dependent changes of the following parameters were observed: (a) increasing of number of follicle-building thyroid cells; (b) increasing of follicular volume, (c) decreasing of nucleus volume. Investigation of the whole population of thyroid mast cells disclosed no change in degranulation intensity. By contrast, degranulation intensity was decreased in perifollicular mast cells from groups treated with atrazine in dose-dependent manner.There are no changes observed in degranulation of stromal mast cells. These results suggesting that differences in response to the atrazine might account for an aspect of the functional heterogeneity within the rat thyroid mast cell population.I. N. KORNILOVSKAYA M. V. GORELAYA V. S. USENKO L. V. GERBILSKY AND V. A. BEREZIN(Dept. of Histology, Dniepropetrovsk Medical Institute, Dept. of Biochemistry, Dniepropetrovsk State University, Gagarin Ave. 72,Dniepropetrovsk 320625,Ukraine) 1996Biomedical and Environmental Sciences1996,9,1:4
20Zonal disintegration of rocks around underground workings, Part 1: Data of in situ observations显示文摘E. I. Shemyakin G. L. Fisenko M. V. Kurlenya V. N. Oparin V. N. Reva F. P. Glushikhin M. A. Rozenbaum é. A. Tropp Yu. S. Kuznetsov 1987Soviet Mining Science1987,,3:3
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