|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Synthesis and characterization of high ceramic yield polycarbosilane precursor for SiC显示文摘The polycarbosilane(PCS)precursor for SiC with high molecular weight and medium molecular weight distribution was synthesized from polydimethylsilane at normal pressure.The chemical formula,the number average molecular weight,and the polydispersivity index of the synthesized PCS are SiC_(1.94)H_(5.01)O_(0.028),1135,and 1.66,respectively,which can be attributed to the higher reaction temperature used for polymerization.The polymer to ceramic conversion of PCS was completed at 900℃with a ceramic yield of 85%.The crystallization started at 1100℃,and at 1200℃,well resolved peaks ofβ-SiC were formed with small amount ofα-cristobalite.The X-ray diffraction(XRD)and transmission electron microscopy(TEM)studies indicated the presence of nanocrystallineβ-SiC. | Mangesh LODHE Narendra BABU A.SELVAM M.BALASUBRAMANIAN | 2015 | Journal of Advanced Ceramics2015，4，4： | 4 |
| 2 | Magnetotelluric investigation of lithospheric electrical structure beneath the Dharwar Craton in south India:Evidence for mantle suture and plume-continental interaction显示文摘Broad-band and long period magnetotelluric measurements made at 63 locations along -500 km long Chikmagalur-Kavali profile,that cut across the Dharwar craton (DC) and Eastern Ghat Mobile Belt (EGMB) in south India,is modelled to examine the lithosphere architecture of the cratonic domain and define tectonic boundaries.The 2-D resistivity model shows moderately conductive features that intersperse a highly resistive background of crystalline rocks and spatially connect to the exposed schist belts or granitic intrusions in the DC.These features are therefore interpreted as images of fossil pathways of the volcanic emplacements associated with the greenstone belt and granite suite formation exposed in the region.A near vertical conductive feature in the upper mantle under the Chitradurga Shear Zone represents the Archean suture between the western and eastern blocks of DC.Although thick (-200 km) cratonic (highly resistive) lithosphere is preserved,significant part of the cratonic lithosphere below the western DC is modified due to plume-continental lithosphere interactions during the CretaceouseTertiary period.A west-verging moderately conductive feature imaged beneath EGMB lithosphere is interpreted as the remnant of the Proterozoic collision process between the Indian land mass and East Antarctica.Thin (-120 km) lithosphere is seen below the EGMB,which form the exterior margin of the India shield subsequent to its separation from East Antarctica through rifting and opening of the Indian Ocean in the Cretaceous. | D. Malleswari K. Veeraswamy K.K. Abdul Azeez A.K. Gupta Narendra Babu Prasanta K. Patro T. Harinarayana | 2019 | Geoscience Frontiers2019，10，5： | 3 |
| 3 | Extended Posterior Circumferential Approach to Thoracic and Thoracolumbar Spine显示文摘 | Gabriel D. Sundararaj Krishnan Venkatesh Parasa Narendra Babu Rohit Amritanand | 2009 | 2009，，3： | 1 |
| 4 | 尼泊尔拉姆琼县(Lamjung District)社区森林中树木的组成和更新显示文摘尼泊尔的社区森林计划是十分成功的森林保护计划之一。森林生态系统中的树种在维持植被结构、复杂性和异质性方面起着重要的基础性的作用。本研究分析了尼泊尔拉姆琼县(Lamjung District)亚热带地区的5个社区森林(Community Forest,CF)中树种的组成和更新,为今后的长期研究提供了基础数据,并帮助社区科学地管理社区森林。本研究使用35个样方(20 m×20 m),通过分层随机抽样生成树种数据。结果表明,森林中成年树的密度在575 Ind ha^(-1)(Tilahar CF)到1196 Ind ha^(-1)(Deurali Thadopakha CF)之间,幼树的生长范围为2533 Ind ha^(-1)(Tilahar CF)到4000 Ind ha^(-1)(Thuliban CF),幼苗为19583 Ind ha^(-1)(Tilahar CF)到37500 Ind ha^(-1)(Thuliban CF);成年树种的胸高断面积为28.34 m^(2)ha^(-1)(Tilahar CF)至49 m^(2)ha^(-1)(Deurali CF);成年树种的Shannon-Weiner‘sH指数为1.08(ThulibanCF)到1.88(TilaharCF);异序乌桕(Sapium insigne)、孟加拉榕树(Ficus benghalensis)、西藏长叶松(Pinus roxburghii)、合欢属(Albizia sp.)以及紫薇属的Lagerstroemia parviflore更新较差。总的来说,除了Tilahar社区森林之外,其余社区森林均具有良好的更新,但根据胸径大小等级分布图来看,均没有可持续的更新。在5个社区森林中,成年植株的胸径大小有显著差异,其中Deurali Thadopakha社区森林的成年植株胸径最小。社区森林中的大多数树种更新能力较弱,较少的树种如粗娑罗双(Shorea robusta)、印度锥(Castanopsis indica)以及西南木荷(Schima wallichii)以优势地位维持了社区森林的整体再生,因此在维护社区森林时需要对更新能力较差的物种进行进一步的区分以制定科学的种植管理计划。 | Tilak Babu CHAPAGAI Dipak KHADKA Dinesh Raj BHUJU Narendra Raj KHANAL 施诗 崔大方 | 2021 | Journal of Resources and Ecology2021，12，5： | 1 |
| 5 | A phase II study of neoadjuvant chemotherapy followed by organ preservation in patients with muscle-invasive bladder cancer显示文摘Objective:Conservative approaches in muscle-invasive bladder cancer(MIBC)have been evolved to avoid aggressive surgery,but are limited to elderly,frail,and patients medically unfit for surgery.Our study aimed to assess the response rate of neoadjuvant chemotherapy(NACT)before radiotherapy(RT)in MIBC patients.Methods:Forty patients with urothelial carcinoma of stage T2-T4a,N0,M0 were enrolled between November 2013 and November 2015,and treated with three cycles of NACT with gemcitabine-cisplatin.Post-NACT response was assessed using Response Evaluation Criteria in Solid Tumors(RECIST)criteria.Patients who achieved complete response(CR)and partial response(PR)>50%were treated with radical RT,and those who had PR<50%,stable disease(SD),and progressive disease(PD)underwent radical cystectomy(RC).Survival analysis was done with Kaplan-Meier method and point-to-time events were analyzed with Cox-proportional hazards regression model.Results:After NACT,35(87.5%)patients achieved either PR>50%or CR,and were treated with RT.Five(12.5%)patients who had PR<50%,SD,or PD underwent RC.All patients who received radiation showed CR after 6 weeks.Median follow-up was 43 months(range:10-66 months)and median overall survival(OS)was not reached.Three-year OS,local control,and disease-free survival were 70.1%,60.9%,50.6%,respectively,and 50%of patients preserved their functioning bladder.Three-year OS rate was 88.9%in patients who achieved CR to NACT,73.1%in patients with PR≥50%and 40%in patients with PR<50%.Conclusion:NACT followed by RT provides a high probability of local response with bladder preservation in CR patients.Appropriate use of this treatment regimen in carefully selected patients may omit the need for morbid surgery. | Chinna Babu Dracham Narendra Kumar Santosh Kumar Arun Elangovan Budhi Singh Yadav Ravimohan S.Mavuduru Anupam Lal Pramod K.Gupta Rakesh Kapoor | 2022 | Asian Journal of Urology2022，9，3： | 1 |
| 6 | Optimization of bilayer floating tablet containing metoprolol tartrate as a model drug for gastric retention显示文摘 | Narendra C Srinath MS Babu G | 2006 | AAPS PharmSc iTech2006，7，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员