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Acta Metallurgica sinica(English Letters) 1999年第5期12卷 1136-1141页

作者： D.L.Zhao, h.s.Zhao and W.C.Zhou state Key Laboratory of solidification Processing, Northwestern Polytechnical University, Xi’an 710072,China

The dielectric properties of nano si/C/N composite powder and nano siC powder at high frequencies have been studied. The nano si/C/N composite powder and nano siC powder were synthesized from hexamethyldisilazane ((Me 3si) 2Nh) (Me:Ch 3) and sih 4 C 2h 2 respectively by a laser induced gas phase reaction. The complex permittivities of the nano si/C/N composite powder and nano siC powder were measured between 8 2Ghz and 12 4Ghz. The real and imaginary parts of the complex permittivities of nano si/C/N composite powder are much higher than those of nano siC powder. The siC microcrystalline in the nano si/C/N composite powder dissolved a great deal of nitrogen. The local structure around si atoms changed by introducing N into siC. Carbon atoms around si were substituted by N atoms. so charged defects and quasi free electrons moved in response to the electric field, diffusion or polarization current resulted from the field propagation. The high ε″and loss factor tgδ(ε″/ε′) of si/C/N composite powder were due to the dielectric relaxation.

关键词： nano si/C/N composite powder nano siC powder dielectric properties microstructure

slimQuick ^_(TM)-associated hepatotoxicity in a woman with alpha-1 antitrypsin heterozygosity

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World Journal of hepatology 2012年第4期4卷 154-157页

作者： Douglas h Weinstein William s Twaddell Jean-Pierre Raufman Benjamin Philosophe Ayse L Mindikoglu Division of Gastroenterology and hepatology Department of MedicineUniversity of Maryland School of MedicineBaltimoreMD 21201United States Department of Pathology University of Maryland School of MedicineBaltimoreMD 21201United States Division of Transplantation surgery Department of SurgeryUniversity of Maryland School of MedicineBaltimoreMD 21201United States

Green tea (Camellia sinensis)-associated hepatotoxicity is reported. however, the presence of alpha-1 antitrypsin MZ phenotype as a predisposing factor to green tea-associated drug-induced liver injury (DILI) is unknown. A previously healthy woman with alpha-1 antitrypsin MZ phenotype who took slimQuick?, an herbal supplement containing green tea extract, developed severe hepatotoxicity requiring corticosteroid treatment. Green tea-associated hepatotoxicity is reviewed and alpha-1 antitrypsin MZ phenotype as a predisposing factor to green tea-associated DILI is discussed. Liver biopsy demonstrated marked inflammation with necrosis suggestive of toxic injury with diffuse alpha-1 antitrypsin globule deposition on immunostaining. Corticosteroid therapy resulted in rapid clinical improvement. Alpha-1 antitrypsin MZ phenotype may increase vulnerability to herbal hepatotoxicity.

关键词： slimQuick ^_(TM) Green tea hepatotoxicity Drug-induced liver injury Alpha-1-antitrypsin MZ phenotype

直接法和差异法评估饲料原料在生长猪上的氨基酸消化率

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饲料工业 2020年第24期41卷 58-64页

作者： Maryane s.F.Oliveira John K.htoo hans h.stein 伊利诺伊大学动物科学系美国伊利诺伊州61801 赢创德固赛营养&护理有限公司德国哈瑙63457 伊利诺伊大学营养科学系美国伊利诺伊州61801

文章设计一个试验来检验在直接法下玉米、小麦和小麦麸的氨基酸(AA)的标准回肠消化率(sID)的数值与差异法获得的值比较是否有差异。试验选择初始体重为(69.5±5.0)kg的十六头回肠瘘管猪,随机分配至8种试验日粮,4个阶段的8×4双因素试验... 详细信息

文章设计一个试验来检验在直接法下玉米、小麦和小麦麸的氨基酸(AA)的标准回肠消化率(sID)的数值与差异法获得的值比较是否有差异。试验选择初始体重为(69.5±5.0)kg的十六头回肠瘘管猪,随机分配至8种试验日粮,4个阶段的8×4双因素试验设计中;每个时期包括5 d饲料适应期和2 d收集回肠消化物。8种试验饲料分别为:4种饲料基于豆粕(sBM)、玉米、小麦或小麦麸作为唯一的氨基酸源,另外3种饲料是基于豆粕和玉米、豆粕和小麦、豆粕和小麦麸的混合物,最后一种是无氮饲料。使用直接法计算了前4种饲料中粗蛋白和氨基酸的表观回肠消化率AID以及sID。还用直接法计算了3种含有豆粕和玉米、豆粕和小麦、豆粕和小麦麸的混合饲料中粗蛋白和氨基酸的AID和sID,并从饲料中的AID或sID值中减去了豆粕中可消化氨基酸的贡献。随后通过差异法计算玉米、小麦和小麦麸中氨基酸AID和sID。结果表明,如果使用直接法代替差异法,则不管使用哪种原料,少数几种氨基酸的AID值都较低(PsID有增加的趋势(PsID没有出现类似结果。对于所有其他必需氨基酸,以及对于大多数非必需氨基酸,在差异法和直接法之间,玉米、小麦和小麦麸中氨基酸的sID均无差异。因此,可以使用直接法或差异法确定谷物饲料和纤维饲料中氨基酸的sID值。

关键词：氨基酸差异法消化率直接法豆粕小麦麸

salmonella typhi and gallbladder cancer:report from an endemic region

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hepatobiliary & Pancreatic Diseases International 2010年第5期9卷 524-530页

作者： Mallika Tewari Raghvendra R Mishra hari s shukla Department of surgical Oncology Institute of Medical SciencesBanaras Hindu University

BACKGROUND:Evidence exists of a link between chronic infection by salmonella typhi(***) and the development of gallbladder cancer(GBC),but several studies from endemic regions contradict its role in the etiopathogenesis of *** study used various tools to assess the prevalence of *** in patients with GBC and gallstone disease(GsD) in this region with a high incidence of ***:*** was detected in tissue and bile by PCR and culture and in serum by the Widal test and indirect hemagglutination assay(IhA).PCR with two pairs of *** specific primers(flagellin gene h1d and sOP E gene) could detect 0.6 ng of *** ***-four patients with GBC(cases) were matched with 54 patients with GsD(controls).REsULTs:Of the 54 cases,24(44.44%) were positive on the Widal test and 12(22.22%) on IhA,compared to 13(24.07%) and 5(9.26%) respectively in the ***(33.33%) cases showed a positive result on PCR(tissue) and 2 on PCR(bile) *** in the *** culture revealed no salmonella colonies in either cases or *** 3 cases were positive for salmonella on tissue culture compared to none in the *** sensitivity of PCR(tissue) relative to the Widal test,IhA,culture(bile and tissue) and PCR(bile) was 100% vs.66.67%,11.11%,and 11.11%,and the specificity was 83.33% vs.100%,100%,and 100%,***:*** is significantly associated with GBC compared to GsD(33% vs.0%).PCR appears to be the most specific diagnostic tool,the gold standard for *** in tissue samples.

关键词： salmonella typhi gallbladder cancer polymerase chain reaction Widal indirect hemagglutination assay culture

EFFECTs OF CARBON CONTENT AND ROLLING PROCEssING ON RETAINED AUsTENITE FOR hOT-ROLLED TRIP sTEELs

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Acta Metallurgica sinica(English Letters) 2002年第5期15卷 439-447页

作者： Y. Chen, X. Chen, Z.X. Yuan, B.F. Xu, A.M. Guo, P.h. Li and s.K. PuWuhan University of science and Technology, Wuhan 430081, ChinaTechnical Center of Wuhan Iron and steel Co., Wuhan 430080, China Wuhan University of science and Technology Technical Center of Wuhan Iron and steel Co.

The effects of finishing rolling temperature and coiling temperature on retained austen-ite were studied for hot-rolled transformation induced plasticity (TRIP) steels with different carbon content. The experimental results showed that an appropriate volume fraction of retained austenite from 6% to 11% could be obtained according to the different carbon content less than 0.20% by controlled finishing rolling and coiling for the hot-rolled TRIP steels. It can be concluded that carbon content has a significant effect on the fraction of retained austenite and coiling processing plays stronger role on retaining austenite than fishing rolling processing.

关键词： TRIP steel carbon content retained austenite

Parental care in the freshwater crab <i>sylviocarcinus pictus</i>(Milne-Edwards, 1853)

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Open Journal of Ecology 2013年第2期3卷 161-163页

作者： Bruno s. sant’Anna Erico L. h. Takahashi Gustavo Yomar hattori Federal University of Amazonas (Amazonas University) Institute of Exact Science and Technology (ICET) Itacoatiara Brazil

Parental care is a common strategy in many animal groups, to increase survival of the off-spring. here, we report parental care in the freshwater crab sylviocarcinus pictus. A female caught in the Amazon River, Brazil, bore juvenile crabs rather than eggs on her abdomen. Kept in the laboratory, the female retained the juveniles on the abdomen for 17 days, after which the juveniles left the abdomen. A total of 341 juvenile crabs measuring 3.45 ± 0.12 mmwere recorded. This pattern of parental care is very important for the maintenance of local populations of s. pictus, because if the larvae were released, as occurs in many marine species, they would drift downstream.

关键词： Freshwater Crab Parental Care Reproduction Trichodactylidae

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用中性盐溶液评价重金属对植物和土壤的影响

农业资源与环境学报 1988年第4期 44-45页

作者： h h ni s Gupta 熊礼明

土壤中重金属全量常用来表示土壤受污染的程度。然而,重金属总量在判断其生物学效应(如对植物或微生物的影响)时没有多大价值。本文表明,污染的土壤中,中性盐溶液较适合于用来评价重金属的生物有效性。因为:1.特定的土壤重金属含量(溶于... 详细信息

土壤中重金属全量常用来表示土壤受污染的程度。然而,重金属总量在判断其生物学效应(如对植物或微生物的影响)时没有多大价值。本文表明,污染的土壤中,中性盐溶液较适合于用来评价重金属的生物有效性。因为:1.特定的土壤重金属含量(溶于0.1MNaNo)具有明确的生物学效应,其含量不取决于土壤性质。就Zn,Cd,Cu而言,含量分别为1,0.06,1.5ppm。土壤中可溶性金属含量主要受ph控制,因此,当

关键词：重金属含量土壤重金属中性盐植物

segmented trust assessment in autonomous vehicles via eye-tracking

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Journal of Intelligent and Connected Vehicles 2024年第2期7卷 151-161页

作者： Miklós Lukovics szabolcs Prónay Barbara Nagy Faculty of Economics and Business Administration University of SzegedSzeged H-6726Hungary

Previous studies have identified trust as one of the key factors in the technology acceptance of autonomousvehicles. As these studies mostly investigated the population in general, little is known about segment-specific ***, the widely used survey methods are less able to capture the deeper forms of trust—which neuroscientificmethods are much better suited to capture. The main objective of our research is to study trust as one of the key factors oftechnology acceptance related to autonomous vehicles by using neuroscientific methods for specific consumer ***-time eye-tracking tests were applied to a sample of 113 participants, combined with a posttest self-report. The testswere carried out under laboratory conditions during which our subjects watched videos recorded with the internal camerasof autonomous vehicles. Based on the fixation count, total fixation duration, and pupil dilation, we empirically verified thatthe trust level of all five identified segments is relatively low, while the trust level of the “traditional rejecting” segment is thelowest. An increase in trust level can be shown if the subjects receive extra information about the journey. Anotherimportant finding is that the self-reported trust level is not always congruent with the eye-tracking analysis results;therefore,combined approaches can lead to greater measurement validity.

关键词： autonomous vehicles(AVs) technology acceptance trust eye-tracking

Impact of soil Texture and Organic Matter Content on Methyl Isothiocyanate Volatilization from soil Columns

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Journal of Agricultural science and Technology(A) 2011年第2X期1卷 194-198页

作者： C. R. simpson s. D. Nelson h. A. Ajwa Department of Agronomy & Resource sciences Texas A&M University-Kingsville MSC 228 KingsviUe TX 78363 USA

Metam sodium （Ms; sodium N-methyl dithiocarbamate） has emerged as a promising soil fumigant in the Us to replace methyl bromide （MeBr）. Metam potassium （MK; potassium N-methyl dithiocarbamate） and Ms break down into the volatile gas methyl isothiocyanate （MITC） to control soil borne pests. Many studies have focused on Ms, but MK has not been studied as thoroughly. The objective of this research was to determine the effect of increasing organic matter （OM） treatments and soil texture to minimize the off-gassing of Ms and MK. Bench-scale soil column studies were performed to simulate organic matter treatments that may decrease the volatilization loss of MITC. Incorporation depth of OM simulated surface tillage （0-15 cm） practices. soil was packed in steel columns and Ms or MK was applied at a depth of 15 cm and MITC volatilization was measured using gas chromatography/mass spectroscopy. Volatilization of MITC behaved similarly for Ms and MK with MITC movement impacted by soil texture. MITC volatilization was lower from a sandy clay loam than a sandy soil. surface incorporation of OM did not significantly decrease MITC volatilization. These results suggest that soil texture is the dominant factor reducing MITC off-gassing and prolonging the time needed to control soil borne pests.

关键词： Metam sodium metam potassium methyl isothiocyanate methyl bromide alternatives soil columns.

Relation of Primitive Moisture Content and Energy Consumption on soybean Pod Threshing

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Journal of Agricultural science and Technology(B) 2011年第7期1卷 1086-1090页

作者： M. Azadbakht M. h. Khoshtaghaza B. Ghobadian s. Minaei Department of Agricultural Machinery Engineering Tarbiat Modares University Tehran P.O. Box 14115-336 1ran

In this research, the effects of initial moisture content and needed impact energy on threshing of soybean pods were studied. An impact device was built based of pendulum mechanism. In the experiments, threshing percentage of soybean pod samples were measured at three initial moisture content levels of 16.25% and 35% w.b. and three energy levels of 173,284 and 446 mJ. The results of analysis of variance showed that moisture content and energy have significant effects on the threshing percentage. By increasing impact energy, amount of pod threshing increased. Also in all the energy levels, maximum threshing occurred at minimum moisture. Maximum threshing percentage was 83.4%, which was at 16% moisture content and 446 mJ levels, also minimum threshing percentage was 3.3% which was at 35% moisture content and 174 mJ levels. soybean pod with higher moisture, contact between its edges of the pod was stronger than lower moisture, so more energy was needed to separate two edges at 35% moisture.

关键词： soybean pod threshing impact energy primitive moisture content.