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China Communications 2008年第3期5卷 49-52页

作者：程子阳 Sunanda sangwan 关冲唐守廉北京邮电大学经济管理学院新加坡南洋理工大学南洋商学院

根据修正后的Cournot模型和Stackelberg模型,本文分析了电信业重组前双寡头垄断下移动通信市场的市场份额,并用数据验证了分析结论;同时分析了电信业重组后三寡头垄断下移动通信市场初期以及成熟期的市场份额。

关键词：移动通信市场份额博弈分析

Simultaneous bilateral trochanteric fracturesma report of four cases

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Chinese Journal of Traumatology 2012年第6期15卷 360-363页

作者： Vinit Verma Zile Singh Kundu Amit Batra Raj Singh Sukhbir Singh sangwan Pratyush Gupta Department of Orthopaedic Surgery Paraplegia &Rehabilitation Pt. B.D. Sharma PGIMS Rohtak 124001Haryana India

Simultaneous bilateral intertrochanteric fractures are very rare. There is a paucity of data in current literature documenting patients with such kind of hip fractures. It is severe and potentially life-threatening, associated with a high morbidity. The major determinants of successful outcome are high vigilance, early single stage stabilization and mobilization as well as management of associated comorbid conditions that may influence the longterm rehabilitation of patients. Here we reported 4 cases of concurrent bilateral trochanteric fractures along with review of the literature. Our study aimed to discover its frequency, identify the injury mechanisms as well as factors present in the pathogenesis of these fractures, and outline the available treatment modalities.

关键词： Hip fractures Bone screws Bone plates

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甘蔗蔗茎性状遗传变异性的研究

甘蔗糖业 1981年第12期 55-57页

作者： Ranbir Singh R.S.sangwan 黄惠恩

对50个甘蔗品种的蔗茎性状进行测定。发现Co7707,Co7608和Co7611三个品种是有前途的,所记录的蔗茎产量高于较好的对照种Co7717。在这批材料中,所有蔗茎性状都表现出显著的变异性。其遗传力的估计数(从广义上)是大幅度的。对于每行蔗茎... 详细信息

对50个甘蔗品种的蔗茎性状进行测定。发现Co7707,Co7608和Co7611三个品种是有前途的,所记录的蔗茎产量高于较好的对照种Co7717。在这批材料中,所有蔗茎性状都表现出显著的变异性。其遗传力的估计数(从广义上)是大幅度的。对于每行蔗茎产量、一茎重和有效茎数的预期遗传进展也是高的。生产性栽培的甘蔗品种是复合的多倍体。这种甘蔗的杂合性和多倍体本性导致大量的遗传变异性的世代。适当的遗传变异性的存在以及可遗传与不可遗传变异的知识可用作对材料的育种价值的一个指南。用遗传进展的知识去估定其中可改进的总量是值得的。从此目的出发,进行本研究,以评价Co的甘蔗品种中蔗茎特性的各种遗传参数。

关键词：甘蔗品种 Co 茎径茎长蔗茎产量遗传变异性茎数

ACID-Functionalized Porphyrazines Exhibit ANTI-Tumor Behavior in Head and Neck Squamous Cell Carcinomas

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ACID-Functionalized Porphyrazines Exhibit ANTI-Tumor Behavio...

培养的角膜缘上皮细胞移植后穿透性角膜移植术的早期结果

第四届中国肿瘤学术大会暨第五届海峡两岸肿瘤学术会议

作者： Benjamin J. Vesper Neal D. Hammer sangwan Lee Kim Elseth Anthony G. M. Barrett Brian M. Hoffman James A. Radosevich Center for Molecular Biology of Oral Diseases College of Dentistry University of Illinois at Chicago801 S.Paulina St.ChicagoIL60612USA Center for Molecular Biology of Oral Diseases College of Dentistry University of Illinois at Chicago801 S.Paulina St.ChicagoIL60612USA Department of Chemistry Northwestern University 2145 N.Sheridan Rd.EvanstonIL60208USA Center for Molecular Biology of Oral Diseases College of Dentistry University of Illinois at Chicago801 S.Paulina St.ChicagoIL60612USA Department of Chemistry Imperial College of Science Technology and MedicineExhibition RoadSouth KensingtonLondonSW7 2AZUK Department of Chemistry Northwestern University 2145 N.Sheridan Rd.EvanstonIL60208USA Center for Molecular Biology of Oral Diseases College of Dentistry University of Illinois at Chicago801 S.Paulina St.ChicagoIL60612USA

＜正＞Background/Aims: The porphyrin drug Photofrin is used in photodynamic therapy applications to clinically treat oral and upper aerodigestive tract tumors;however, this drug is limited by its inadequate tumor selectivity and poor optical properties-common problems for members of the porphyrin family. We are currently studying a class of porphyrin derivatives, the porphyrazines （pzs）, which possess superior optical properties and greater synthetic flexibility than the porphyrins and show promise as both PDT agents and traditional anti - tumor agents. Previous work in our laboratory has shown that a subfamily of acid - functionalized pzs exhibit selective anti - tumor activity in A549 human lung adenocarcinoma cells. We here expand this study to test these same pzs in a number of head and neck squamous cell carcinoma （SCC） cell lines. Methods: MTT proliferation/viability assays were used to test the toxicity of three H2[pz（ An;B4-n） ] pzs, where n = 4, 3, or 2 （ in a trans conformation）, A is [S（CH2）3COOH], and B is a fused β,β’ - diisopropyloxybenzo ring. Five SCC cell lines were exposed to the pzs at concentrations of 12.5 - 50 μM, for periods of 24, 48, and 72 hours. Results: As the number of terminal acid groups on the pzs was increased, the amount of toxicity observed in the SCC cell lines upon 72 hour exposure also increased-a trend which was also observed previously in the A549 adenocarcinoma cell line. Additionally, at any given concentration, each compound was found to kill a greater percentage of tumor cells than normal cells. Normal cells were found to be unaffected by the H2A2B2 pz （four acid groups） at concentrations of 25 μM and below, whereas all five SCC cell lines exhibited toxicity in the presence of each of the three pzs at all concentrations studied （12.5 - 50 μM）. Conclusion: The acid - appended pzs were found to exhibit the same structure - function relationship in both adeno-carcinomas and squamous cell carcinomas. The selective tumor toxicity

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世界核心医学期刊文摘(眼科学分册) 2006年第1期 21-22页

作者： sangwan V.S. Matalia H.P. Vemuganti G.K. 王大江 L V Prasad Eye Institute L V Prasad Marg Banjara Hills Hyderabad 500 034 India

Objective: To describe the early results of penetrating keratoplasty (PKP) in patients who had previously undergone cultivated limbal epithelium transplantation. Methods: Medical records of patients with limbal stem cell deficiency due to chemical burns who underwent PKP after cultivated limbal epithelium transplantation were reviewed for demographics, primary etiology, type of limbal transplantation, ocular surface stability, visual acuity, graft clarity, and complications. Histopathologic features of the recipient corneal buttons were studied with special attention to epithelial status. Results: Of the 125 patients with limbal stem cell deficiency treated with cultivated limbal epithelium transplantation, 15 underwent PKP at a mean interval of 7 months (range, 2-12 months) following cultivated limbal epithelium transplantation (autologous, n=11; allogenic, n=4). All 4 patients treated with allogenic cultivated limbal epithelium transplantation were undergoing immunosuppressive therapy. Fourteen (93% ) of the 15 eyes had a successful corneal graft with a stable corneal epithelium. Preoperative best-corrected visual acuity was less than 20/200 in 14 of the 15 eyes. At a mean± SD follow-up of 8.3± 5.0 months after PKP, the best-corrected visual acuity was more than 20/60 in 8 eyes, 20/200 to 20/60 in 5 eyes, and less than 20/200 in 2 eyes. Three of the 15 eyes experienced corneal allograft rejection, which was managed successfully. One eye with graft rejection also had glaucoma. None of the limbal epithelial allografts showed signs of rejection. Conclusions: Early results of PKP following cultivated limbal epithelium transplantation are favorable when performed after stabilizing the ocular surface. Adequate immunosuppression is essential for allogenic cultivated limbal epithelium transplantation to avoid rejection. Corneal allografts can separately reject the limbal allografts.

关键词：角膜缘上皮细胞穿透性角膜移植术角膜植片

前房内注射全氟丙烷(C_3F_8)气体治疗急性角膜水肿

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世界核心医学期刊文摘（眼科学分册） 2005年第7期1卷 18-19页

作者： Shah S.G. Sridhar M.S. sangwan V.S. 潘佳鸿 Cornea and Anterior Segment Service L.V. Prasad Eye Institute L.V. Prasad Marg Hyderabad500034 India

Purpose: To report a case of acute hydrops with intrastromal cleft in a patient of keratoconus with associated Marfan’ s syndrome, treated with intracameral injection of perfluoropropane (C3F8) gas. Design: Interventional case report. Methods: A nonexpansile concentration of perfluoropropane gas (0.2 ml)- was injected intracamerally in the operating room under aseptic precautions. Results: There was complete and rapid resolution of corneal edema. Conclusion: Intracameral perfluoropropane gas in nonexpansile concentrationmay be a useful modality for treatment of corneal edema in acute corneal hydrops.

关键词：前房内注射 C3F8 全氟丙烷角膜水肿基质层圆锥角膜干预性膨胀性无菌操作

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伴有睑板坏死的单眼结核性结膜炎

美国医学会眼科杂志（中文版） 2004年第4期16卷 234-237页

作者： MerleFernandes GeetaK.Vemuganti GunishaPasricha AashishK.Bansal VirenderS.sangwan 肖格格李子良

虽然结膜性结核病在医学文献中是一个非常明确的临床疾病，但是可以与其他结膜炎混淆。分子学的诊断性组织活检可以明确诊断。我们报告了用组织病理学和分子学技术明确诊断的2例结核菌为慢性肉芽肿性结膜炎的病原。这2名患者的睑板坏死... 详细信息

虽然结膜性结核病在医学文献中是一个非常明确的临床疾病，但是可以与其他结膜炎混淆。分子学的诊断性组织活检可以明确诊断。我们报告了用组织病理学和分子学技术明确诊断的2例结核菌为慢性肉芽肿性结膜炎的病原。这2名患者的睑板坏死，最初怀疑为一连串睑板上积累的皮质类固醇注射造成的乳头性结膜炎。这2例病例显示迫切需要一种明确病因的全身性和合适的治疗方法。

关键词：睑板结膜炎诊断坏死眼结核分子学单眼确诊组织活检结核菌

利用体外培养选育芥菜型油菜和白芥种间杂种改良抗黑斑病的性状(英文)

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利用体外培养选育芥菜型油菜和白芥种间杂种改良抗黑斑病的性状(...

第十二届国际油菜大会

作者： R.C.Yadav Dhiraj Singh Neelam Yadav Somveer Nimbal Naveen Chandra Omender sangwan Amit Singh Harbinder Singh Deptt.of Biotechnology and Molecular Biology CCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） Deptt.of Biotechnology and Molecular Biology CCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） Oilseeds section Deptt.of Plant BreedingCCS Haryana Agricultural UniversityHisar-125004 （India） National Research Centre on Rapeseed-Mustard SewarBharatpur 321303 （India）

白芥（Brassica alba）是黑斑病抗性的重要资源,能为印度芥菜型油菜转移该性状提供有价值的资源材料。遗憾的是,传统的方法不能成功获得种间杂种,而种间杂种对改良印度芥菜型油菜的黑斑病抗性至关重要。本研究通过体外培养来挽救种间杂... 详细信息

白芥（Brassica alba）是黑斑病抗性的重要资源,能为印度芥菜型油菜转移该性状提供有价值的资源材料。遗憾的是,传统的方法不能成功获得种间杂种,而种间杂种对改良印度芥菜型油菜的黑斑病抗性至关重要。本研究通过体外培养来挽救种间杂种。将两个优良的芥菜型油菜栽培品种即Varuna和RH0345与白芥进行种间杂交,于授粉后20天取含有正在发育的种子的未成熟角果,经表面消毒后将正在发育的种子培养在经改良的Murashige and Skoog（1962）培养基中。然后将杂种幼苗培养在两种MS培养基中,一种不含生长调节剂而添加500mg/l酪蛋白水解物,另一种添加2.5mg/l激动素。结果发现两种培养基都非常适合挽救种间杂种,在培养中植株表现出双亲的形态特征。这些植株通过茎段培养保存,下一季节种植在田间进行鉴定,筛选对黑斑病抗性和其它农艺性状都好的杂种。

关键词： Indian mustard (Brassica juncea Czern & Coss.) White mustard (Brassica alba) Interspecific hybridization In vitro culture Alternaria blight

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利用植物提炼油防治植物线虫

河南科技 1992年第2期11卷 27-27页

作者： sangwan N.K 姜昆

本文研究了一些植物如唇形科的毛罗勒、圣罗勒和辣薄荷,桃金娘科的红千层和番樱桃以及木本科的香茅等的提炼油及这些提炼油的主要类单萜组分——里哪醇、番樱桃酚、薄荷醇、桉油醇和(?)牛几醇对小麦线虫、柑桔根线虫、根结线虫和胞囊线... 详细信息

本文研究了一些植物如唇形科的毛罗勒、圣罗勒和辣薄荷,桃金娘科的红千层和番樱桃以及木本科的香茅等的提炼油及这些提炼油的主要类单萜组分——里哪醇、番樱桃酚、薄荷醇、桉油醇和(?)牛几醇对小麦线虫、柑桔根线虫、根结线虫和胞囊线虫二龄虫具有防治效果。番樱桃的提炼油以及它的主要组分里哪醇、牛几醇和番樱桃酚对这4种线虫都表现出有很好的杀线虫作用。对于植物病原线虫的防治效果有必要进一步提高,防治植物病原线虫的主要方法是化学防治,包括合成的熏蒸剂和非熏蒸剂。然而。

关键词：植物线虫防治植物提炼油

*** implants for corneal regeneration in patients at high risk of rejecting donor transplantation

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Annals of Eye Science 2019年第1期 197-197页

作者： May Griffith M.Mirazul Islam Oleksiy Buznyk Fiona Simpson Per Fagerholm Keith Meek Virender sangwan Department of Ophthalmology and Institute of Biomedical Engineering University of Montreal and Maisonneuve-Rosemont Hospital and CHUM Research CentresMontrealQCCanada Department of Clinical and Experimental Medicine Linköping UniversityLinköpingSweden Schepens Eye Research Institute and Massachusetts Eye and Ear Infirmary Harvard Medical SchoolBostonMAUSA Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine OdessaUkraine School of Optometry and Vision Sciences College of Biomedical and Life Sciences and Cardiff Institute for Tissue Engineering and Repair(CITER)Cardiff UniversityCardiffUK Tej Kohli Cornea Institute LV Prasad Eye InstituteHyderabadIndia Dr.Schroff Charity Eye Hospital New DehliIndia

Background:Patients with inflammation or severe corneal pathology are often at high risk of rejecting the human donor corneas that they receive during *** goal was to determine whether cell-free implants incorporating phosphorylcholine-based polymer,2-methacryloyloxyethyl phosphorylcholine(MPC),which has inflammation suppressing properties,can support repair and regeneration of ulcerated,high-risk ***:Interpenetrating networks of recombinant human collagen and MPC(RHC-MPC)were fabricated into corneal implants in a certified and monitored *** open-label,first-in-human observational study was conducted following ISO 14971 and 14155:2011,the Declaration of Helsinki and relevant laws of Ukraine and India,after respective ethical approval and trial *** unilaterally blind patients,aged 36 to 76 years old,diagnosed with conditions putting them at high risk of rejecting conventional corneal transplantation,and capable of providing informed written consent were grafted and followed up for an average of two ***,RHC like native collagen is a large macromolecule and difficult to process and is ***,small,customisable analogs to collagen comprising collagen-like peptides(CLP)conjugated to polyethylene glycol(PEG)were *** CLP-PEG analogs like RHC were combined with MPC into implants and tested in mini-pig models with alkali burned corneas,a high-risk ***:One patient had an unrelated infection that necessitated re-grafting and was excluded from the *** RHC-MPC implants in the remaining six patients were stably integrated throughout the entire observational *** was regeneration of the cornea epithelium and *** vision improvement was observed in in patients with damaged corneas due to *** two weeks post-operation,RHC-MPC implanted corneas of patients with active ulcers were free from the symptoms of pain,irritation and *** the

关键词： Cornea inflammation implant clinical trial pigs