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国际沙棘研究与开发 2008年第1期6卷 40-44页

作者：杨唐英温秀凤 Shipra Saklani H. R. Sharma virendra singh 北京林业大学水土保持学院北京100083 水利部沙棘开发管理中心北京100038 College of Home Science Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya PalampurIndia 176 062 CSKHPKV山地农业推广中心 BajauraKullu 175 125India

沙棘(Hippophae rhamnoids L.),属于胡颓子属,在印度喜马偕尔邦地区称作"Chharma and Surch",沙棘能够在这种非常恶劣的气候条件下自然生长。本文介绍了制作沙棘饮料的一系列程序和如何储存饮料120d而不使其变质的方法。沙棘果实采自印... 详细信息

沙棘(Hippophae rhamnoids L.),属于胡颓子属,在印度喜马偕尔邦地区称作"Chharma and Surch",沙棘能够在这种非常恶劣的气候条件下自然生长。本文介绍了制作沙棘饮料的一系列程序和如何储存饮料120d而不使其变质的方法。沙棘果实采自印度喜马偕尔邦河谷。用碎浆机提取沙棘汁,制作沙棘饮料要准备好合适比例的沙棘汁和制作饮料所需的糖。随着果浆比例的升高,维生素C的含量明显增加(P≤0.05),随着贮藏时间的延长,维生素C的含量明显降低。而随着糖和果浆的增加以及储存期的延长,还原性糖呈上升趋势。当饮料中果浆和糖的比例分别为10%和13%、12.5%和13%、15%和15%时,饮料最为宜口,给于较高的评价。在喜马偕尔邦,人们一直认为沙棘具有商业价值,但是其价值在此前一直没有得到足够的重视。

关键词：沙棘化学成分感官 RTS饮料

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沙棘叶子提取物对白化病白鼠由铬诱导氧化胁迫的抗氧化活性评估

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陕西林业科技 2006年第1期30卷 90-94页

作者：郭海赵明 S.Geetha M.Sai Ram S.S.Mongia virendra singh G.Ilavazhagan R.C.Sawhney 水利部沙棘开发管理中心北京100038 香港中文大学生物系生理联合科学预防研究所 H.P.农业大学

本研究报道沙棘(胡颓子科)对雄性白化病白鼠由铬诱导氧化胁迫的抗氧化活性。氧化胁迫通过对小白鼠进行强制性喂养30 d,以浓度为30 m g/kg的铬相对体重比例的重铬酸钾盐实现。铬促使体重下降,而却明显增加了器官与体重比例。铬处理明显... 详细信息

本研究报道沙棘(胡颓子科)对雄性白化病白鼠由铬诱导氧化胁迫的抗氧化活性。氧化胁迫通过对小白鼠进行强制性喂养30 d,以浓度为30 m g/kg的铬相对体重比例的重铬酸钾盐实现。铬促使体重下降,而却明显增加了器官与体重比例。铬处理明显减少了谷胱甘肽的降低,增加了丙二醛和肌氨酸磷酸激酶的水平;而且它还加强了血清中谷氨酸草酰乙酸转移酶和谷氨酸丙酮酸转移酶的浓度。用不同剂量的沙棘叶子提取物(乙醇提取)对保护铬元素诱导的氧化胁迫进行了评估,结果表明叶子提取物在浓度为100到250 m g/kg铬与体重比的情况下可以明显保护动物避免由铬所诱导的氧化伤害。

关键词：沙棘铬氧化胁迫抗氧化剂

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Relationship between species richness,taxonomic distinctness,functional diversity,and local contribution toβdiversity and effects of habitat disturbance in the riparian spider community of the Ganga River,India

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Ecological Processes 2023年第1期12卷 204-216页

作者： Kritish De Amar Paul singh Arkojyoti Sarkar Kritika singh Manju Siliwal virendra Prasad Uniyal Syed Ainul Hussain Wildlife Institute of India ChandrabaniDehradun 248001India Present Address:Department of Life Sciences Sri Sathya Sai University for Human ExcellenceNavanihalOkali PostKamalapurKalaburagiKarnataka 585313India

Background In the riverine riparian ecosystem,particularly in India,the knowledge of the effects of habitat disturbance on taxonomic distinctness,functional diversity,and local contribution toβdiversity(LCBD)of spider community is *** present study examined the relationships between the index of taxonomic distinctness(Δ^(+)),index of variation in taxonomic distinctness(λ^(+)),functional evenness(FEve),functional divergence(FDiv),functional dispersion(FDis),and LCBD of spider community of the Ganga River and the effects of habitat disturbance on these indices.A total of 27 sampling sites were selected along the bank of the Ganga *** on the rating of the disturbance scores,the sites were classified into lowly,moderately,and highly disturbed *** understand the relationships between species richness,Δ^(+),λ^(+),FDis,FDiv,FEve,LCBD,and habitat disturbance score,Pearson’s correlation was calculated,followed by the linear regression *** one-way multivariate analysis of variance was used to find differences in taxonomic distinctness and functional diversity in the different disturbed *** Significant relationships were found betweenλ^(+)andΔ^(+),FDis andΔ^(+),FDis andλ^(+),FDiv and species richness,FEve and species richness,FEve andλ^(+),FEve and habitat disturbance,LCBD and FEve,and LCBD and habitat disturbance.A significant difference was present in the indices of functional diversity between the lowly,moderately,and highly disturbed ***,garbage dump,human settlement,and created embankment influenced the spider community’sλ^(+),FEve,and *** Unrestrained anthropogenic activities exacerbate habitat disturbance by affecting ecological ***,understanding linkages between ecosystem disturbance,taxonomic,functional,andβdiversity can be fundamental to managing and conserving natural *** work highlights the importance of including taxonomic and functional diversity to comprehend the impact of habit

关键词： Habitat disturbance Taxonomic distinctness Functional evenness Functional divergence Functional dispersion Local contribution to beta diversity Spider community Riparian area Ganga River

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Ultrasonic Attenuation in Calcium Oxide

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Advances in Materials Physics and Chemistry 2011年第2期1卷 44-49页

作者： Jitendra Kumar Kailash R. Sanjeev Kumar Shrivastava Devraj singh virendra Kumar 不详

Ultrasonic attenuation studies can be used to characterize material not only after production but during processing as well. The most important causes of ultrasonic attenuation in solids are electron-phonon, phonon-phonon interaction and that due to thermo elastic relaxation. The two dominant processes that will give rise to appreciable ultrasonic attenuation at higher temperature are the phonon-phonon interaction also known as Akhiezer loss and that due to thermo elastic relaxation are observed in calcium oxide crystal. At frequencies of ultrasonic range and at higher temperatures in solids, phonon-phonon interaction mechanism is dominating cause for attenuation. Ultrasonic attenuation due to phonon-phonon interaction (α/f2)p-p and thermo elastic relaxation (α/f2)th are evaluated in Calcium Oxide crystal up to an elevated temperature from 100 K - 1500 K along , and crystallographic directions. Temperature dependence of ultrasonic attenuation along different crystallographic direction reveals some typical characteristic features.

关键词： Attenuation Thermo Elastic Relaxation Phonon-Phonon Interaction Akheiser Loss Gruneisen Constants

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The association of the uterine motion with bladder volume during radiotherapy in gynecological malignancies

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Journal of Cancer Metastasis and Treatment 2016年第1期2卷 139-143页

作者： Bhandari virendra Mutneja Abhinav Gurjar Omprakash Saadvik Raghuram Bagdare Priyusha Gupta Krishnlal singh Kanchan Department of Radiation Oncology Sri Aurobindo Medical College and PG InstituteIndore 452001India

Aim:This study was performed to assess the extent of interfraction uterine motion during radiotherapy for cervical cancer and uterine body carcinoma while maintaining a strict bladder filling ***:Twenty-four patients with cervical cancer or uterine body carcinoma who were treated on a linear accelerator,were *** the course of external beam radiotherapy,cone beam computed tomographic scans were taken,once at the start of treatment and then weekly until the completion of the radiotherapy *** were instructed to maintain a strict bladder filling *** negating the effect of patient’s setup error by offline cone beam computed tomographic imaging,the position of the uterus was defined in the clinical target *** the position of the uterus was compared in the following weekly *** position of the uterus was also correlated with the position and the filling of the *** change in uterus position was measured separately in the anterioposterior(AP),superioinferior(SI),and lateral ***:According to calculations based on weekly imaging,The mean values of shift in AP,SI,and lateral directions were respectively 0.67,0.29,and 0.23 The mean extent of motion in the uterine position on a daily basis for individual patients ranged from-2.28 to+1.3 in AP,-0.56 to+0.71 in SI,and from-0.6 to+0.45 in lateral ***:At least once a week cone beam computed tomography might be necessary to minimize the geometrical miss and deliver the planned doses to the target tissue and normal structure provide best results with minimum toxicity by maintaining a bladder volume of about 100 mL and an empty rectum during the whole course of *** daily anatomical shift and contour of the patients maintaining a bladder volume of approximately 100 mL with an empty rectum may result in asymmetrical conforming to the planning target volume and hence appropriate and adequate planning target volume margins are r

关键词： Uterine motion weekly computed tomographic evaluation intensity modulated radiotherapy inter-fraction variation bladder volume

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