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园艺学报 2024年第S1期51卷 35-36页

作者：包文泉何炎红叶冬梅孙桂芳白玉娥内蒙古农业大学林学院呼和浩特010018 乌尔旗汉森林工业有限公司中心苗圃内蒙古牙克石022159

‘蒙杏5号’西伯利亚杏是从内蒙古林木良种繁育中心西伯利亚杏资源圃中筛选出的高产优良单株。果实圆形,成熟时黄褐色或红色,被短柔毛,单果2.19~2.38 g,单仁0.30~0.38 g。在内蒙古地区,果实成熟期为7月上旬,盛果期株产可达7.8 kg。采用... 详细信息

‘蒙杏5号’西伯利亚杏是从内蒙古林木良种繁育中心西伯利亚杏资源圃中筛选出的高产优良单株。果实圆形,成熟时黄褐色或红色,被短柔毛,单果2.19~2.38 g,单仁0.30~0.38 g。在内蒙古地区,果实成熟期为7月上旬,盛果期株产可达7.8 kg。采用嫁接繁殖,适宜在内蒙古大部分地区栽培。

关键词：西伯利亚杏品种

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甲状腺性眼病中压迫性视神经病

眼科学报 1986年第4期2卷 237-239页

作者： D. Wong j. e. Wright Moorfields eye Hospital City Road London eC1 2CV United Kingdom Moorfields eye Hospital U. K.

视神经受压是甲状腺机能障碍的眼病之一种罕见的并发症。本病虽属自限性,但在静止前常进展至视力严重损失。患者可略有或无症状、伴极轻度眼球突出。对所有甲状腺机能障碍的眼疾患者,一般建议均应小心检查色觉,中心视力和周边视野以及... 详细信息

视神经受压是甲状腺机能障碍的眼病之一种罕见的并发症。本病虽属自限性,但在静止前常进展至视力严重损失。患者可略有或无症状、伴极轻度眼球突出。对所有甲状腺机能障碍的眼疾患者,一般建议均应小心检查色觉,中心视力和周边视野以及相对的传入瞳孔缺损。我们认为对视神经受压病的治疗主要是施行手术。治疗结果是可以预见到且收效迅速,类固醇在近手术期可有好处,而且在制定手术计划期间可使病人渡过危险期。通常需用大剂量类固醇,但长期使用类固醇是不能接受的。必要时可用放疗做手术的补充。

关键词：神经受压眼病

人类是否存在T_H1及T_H2CD4^+克隆

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国外医学（免疫学分册） 1992年第3期15卷 147-149页

作者： Vriesde j e 朱炳法冯军

早年Mosmann 等将小鼠CD4^+T 辅助细胞分为T_H1与T_H2,它们产生淋巴因子的种类及参与体内免疫应答各不相同。近年有人发现,健康人建株的大部分CD4^+T 细胞能产生IL-2,IL-4,IL-5,IFN-γ及GM-CSF 等,这些T 细胞不同于小鼠T_H1,T_H2,但相... 详细信息

早年Mosmann 等将小鼠CD4^+T 辅助细胞分为T_H1与T_H2,它们产生淋巴因子的种类及参与体内免疫应答各不相同。近年有人发现,健康人建株的大部分CD4^+T 细胞能产生IL-2,IL-4,IL-5,IFN-γ及GM-CSF 等,这些T 细胞不同于小鼠T_H1,T_H2,但相似于“T_HO 样”细胞,后者还能产生IL-10。1990年以来,某些学者研究人类疾病时发现淋巴因子的产生亦有明显不同,如移植性重症联合免疫缺陷症的CD4^+T 细胞产生IL-4呈选择性缺陷。屋尘螨过敏病人的CD4^+T 细胞则产生过量IL-4,但寄生虫感染与高Ige 血症病人多克隆活化PBMC 中亦有产生IL-4,IL-2而不分泌IFN-γ的CD4^+T 细胞。由此可见,人类疾病时CD4^+T 细胞产生淋巴因子的方式不同于“T_HO 样”细胞。

关键词： T细胞克隆

Improving electrical,optical and radiation shielding properties of polyvinyl alcohol yttrium oxide composites

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journal of Rare earths 2023年第12期41卷 2002-2009,I0007页

作者： Shams A.M.Issa D.e.Abulyazied Albandari W.Alrowaily H.A.Saudi e.S.Ali A.M.A.Henaish Hesham M.H.Zakaly Department of Physics Faculty of ScienceUniversity of TabukTabukSaudi Arabia Faculty of Science Al-Azhar UniversityAssiut BranchAssiut71524Egypt Polymer Lab Department of PetrochemicalEgyptian Petroleum Research InstituteNasr CityCairoEgypt Department of Physics College of SciencePrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Physics Department Faculty of ScienceAl-Azhar University(Girls Branch)Nasr CityCairoEgypt Institute of Physics and Technology Ural Federal UniversityYekaterinburg620002Russia Physics Department Faculty of ScienceTanta UniversityTanta31527Egypt Istinye University Faculty of Engineering and Natural SciencesComputer Engineering DepartmentIstanbul34396Turkey

This research aims to study the impact of yttrium oxide on the radiation protection features of polyvinyl alcohol(PVA) for gamma shielding *** yttrium oxide(Y_(2)O_(3)) was instilled through the PVA matrix by different contents(x=0.1 wt%,0,3 wt%,0,7 wt%,0,9 wt%),The morphology of the prepared PVA/Y_(2)O_(3)composites was characterized using scanning electron microscopy(SeM).The samples were investigated using absorption edge,transmittance spectra and dielectric *** transmittance and the bandgap energy decrease as the Y2O3content increases while there is an increase in ε’ and ε" as well as the ac conductivity with the content increment of Y_(2)O_(3)till 0.7 wt%.The te mperature dependence of the dc conductivity was measured for all samples in the range of 260-460 K,and it increases with the temperature *** correlate the electrical characteristics of the PVA/Y_(2)O_(3)composites with their structure and evaluate electrical properties with the help of equivalent circuit matching with the experimentally electrical response in the impedance spectrum,the radiation protection properties were also investigated to get the radiation shielding performance of these PVA/Y_(2)O_(3)composite films with varying Y_(2)O(3)*** linear attenuation coefficient(μ),half value layer(T_(0.5)),and mass attenuation coefficient(μm) were *** to all obtained data,PVA/Y_(2)O_(3)composite films with various percentages(0.1 wt%,0.3 wt%,0.7 wt%,0.9 wt%) can be used as a radiation shielding material.

关键词： Yttriumoxide/PVA electrical properties Optical properties Gamma shielding Rare earths

effect of Cation Proportion on the Structural and Magnetic Properties of Ni-Zn Ferrites Nano-Size Particles Prepared By Co-Precipitation Technique

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Chinese journal of Chemical Physics 2008年第4期21卷 381-386页

作者： Santosh S. jadhav Sagar e. Shirsath B. G. Toksha S. j. Shukla K. M. jadhav DSM College of Arts Commerce and Science Jintur Dist. Parbhani 431509 India Department of Physics Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431005 India Postgraduate and Research Centre of Physics Department of Physics Deogiri College Aurangabad India

Ferrites having general formula Ni1-xZnxFe2O4 with x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, and 0.7 were prepared by wet chemical co-precipitation method. The structural and magnetic properties were studied by means of X-ray diffraction, magnetization, and AC susceptibility measurements. The X-ray analysis confirmed the single-phase formation of the samples. The lattice parameter obtained from XRD data was found to increase with Zn content x. The cation distribution was studied by X-ray intensity ratio calculations. Magnetization results exhibit collinear ferrimagnetic structure for x≤0.4, and which changes to non-collinear for x〉0.4. Curie temperature TC obtained from AC susceptibility data decreases with increasing x.

关键词： Ferrites Magnetization Yafet-Kittel angle Curie temperature

TDP-43 overexpression impairs presynaptic integrity

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Neural Regeneration Research 2016年第12期11卷 1910-1911页

作者： Lanier Heyburn Charbel e-H.Moussa Department of Neurology Laboratory for Dementia and ParkinsonismTranslational Neurotherapeutics ProgramGeorgetown University Medical Center

The pathological mechanisms associated with the trans-activating response DNA/RNA binding protein（TDP）-43 remain largely ***,insolubility and post-translational modification of nuclear and cytoplasmic TDP-43 are evident in many neurodegenerative ***-43 constitutes one of the major molecular pathologies associated with RNA metabolism.

关键词： TDP-43 overexpression impairs presynaptic integrity cycle TCA MND

Involvement of eicosanoids in the pathogenesis of pancreatic cancer: the roles of cyclooxygenase-2 and 5-lipoxygenase

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World journal of Gastroenterology 2014年第31期20卷 10729-10739页

作者： Lawrence M Knab Paul j Grippo David j Bentrem Department of Surgery Northwestern University Feinberg School of Medicine Robert H Lurie Comprehensive Cancer Center Northwestern University jesse Brown VA Medical Center

The interplay between inflammation and cancer progression is a growing area of research. A combination of clinical, epidemiological, and basic science investigations indicate that there is a relationship between inflammatory changes in the pancreas and neoplastic progression. Diets high in ω-6 polyunsaturated fatty acids provide increased substrate for arachidonic acid metabolism by cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LOX) to form eicosanoids. These eicosanoids directly contribute to pancreatic cancer cell proliferation. Both COX-2 and 5-LOX are upregulated in multiple cancer types, including pancreatic cancer. In vitro studies using pancreatic cancer cell lines have demonstrated upregulation of COX-2 and 5-LOX at both the mRNA and protein levels. When COX-2 and 5-LOX are blocked via a variety of mechanisms, cancer cell proliferation is abrogated both in vitro and in vivo. The mechanism of COX-2 has been shown to include effects on apoptosis as well as angiogenesis. 5-LOX has been implicated in apoptosis. The use of COX-2 and 5-LOX inhibitors in clinical studies in patients with pancreatic cancer has been limited. Patient enrollment has been restricted to those with advanced disease which makes evaluation of these drugs as chemopreventive agents difficult. COX-2 and 5-LOX expression have been shown to be present during the early neoplastic changes of pancreatic cancer, well before progression to invasive disease. This indicates that the ideal role for these interventions is early in the disease process as preventive agents, perhaps in patients with chronic pancreatitis or hereditary pancreatitis.

关键词： Arachidonic acid eicosanoid Cyclooxygenase-2 5-lipoxygenase Pancreatic cancer Inflammation

用原油的生物标记化合物确定源岩的质量:一种地球化学新技术

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国外油气勘探 1995年第4期7卷 508-522页

作者： j.e.P.Dahl 杨玉峰大庆勘探开发研究院

怀俄明Skully's Gap地区Aspen页岩(相当Mowry页岩)生物标记化合物的分析表明,源岩的重要特征(如干酪根氢碳比(H/C),生油岩评价仪的氢指数(HI)和显微组分)可以通过测定原油中生物标记化合物参数进行间接的定量评价。Aspen源岩抽提物中的... 详细信息

怀俄明Skully's Gap地区Aspen页岩(相当Mowry页岩)生物标记化合物的分析表明,源岩的重要特征(如干酪根氢碳比(H/C),生油岩评价仪的氢指数(HI)和显微组分)可以通过测定原油中生物标记化合物参数进行间接的定量评价。Aspen源岩抽提物中的"升藿烷指数"和干酪根H/C以及HI之间存在着很密切的关系(相关系数R^2分别等于O.93和O.83)。C_30和C_28的4甲基甾皖和抽提物中总的4-甲基甾烷之间的百分比与海相衍生的干酪根无定形Ⅱ型有机质相关CR分别为0.80和O.73),且与H/C和HI也存在着相关性(对于C_30甾烷,R^2分别为0.89和0.88;对于C^28甾烷,R^2为O.89和O.83)。抽提物中4α-甲基-24-乙基胆甾烷对3β-甲基-24-乙基胆甾皖的比率同样和干酪根中的H/C比和HI有关(R^2分别为O.93和O.92)。相反的是抽提物中C_25甾烷的百分含量与干酪根中由高等植物衍生的镜质体百分比相关(R^2为0.69),而与H/C和Hl呈负相关(R^2为O.81和O.66)。上述这些关系可以用来间接地确定源岩中干酪根的特征。在Aspen页岩中观察到的这种生物标记化合物和源岩特征之间的关系可以应用到导管植物演化后沉积的三角洲或近海相源岩中。因此,在垂向排驱的盆地中以原油来预测源岩的性质,对于勘探家寻找和确定区域上最偏生油的地区是很有用的。

关键词：原油生物标记化合物生油岩碳氢比地球化学

Performance analysis of lobed nozzle ejectors for high altitude simulation of rocket engines

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International journal of Modeling, Simulation, and Scientific Computing 2014年第4期5卷 139-157页

作者： j.Bruce Ralphin Rose j.Veni Grace Department of Aeronautical engineering Regional Centre of Anna University Tirunelveli India627007

ejectors are used in high altitude testing of rocket engines to create vacuum for simulat-ing the engine test in vacuum *** performance of an ejector plays a vital role in creating vacuum at the exit of the engine nozzle and the nozzle design exit pressure at the time of ***,the performance of ejectors has to be improved to reduce the consumption of active *** this investigation,the performance of an ejector has been improved by changing the exit shear plane of the ***,conical nozzles are used for creating the required *** of 4 no’s,6 no’s and 8 numbers for an equivalent area ratio=5.88 are used to increase the shear *** influence of shear plane variation in the suction pressure is studied by a detailed CFD analysis.

关键词： High altitude testing lobed nozzles ejector performance thrust augmentation