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| 1 | 水分胁迫下外源ABA提高甘蔗抗旱性的作用机制显示文摘以抗旱甘蔗品种ROC22为材料,调查水分胁迫及胁迫加喷施脱落酸(ABA)对甘蔗内源ABA合成及相关生理生化作用的影响。结果表明,干旱及干旱加外施ABA的条件下,甘蔗内源ABA合成水平上升,但干旱加ABA处理增幅更显著,甘蔗叶内的脯氨酸(Pro)、H2O2、丙二醛(MDA)含量增加,而ABA处理能缓解MDA的积累,使其含量处于低水平,ABA处理能防止叶绿素降解并对干旱引起的最大光能转化效率(Fv/Fm)、PSII实际量子效率(ΦPSII)下降有明显的缓解作用。干旱条件下,H2O2的积累伴随着抗氧化作用的酶CAT、GPX、GR和APX的活性提高,而ABA处理能进一步提高这些相关酶的活性而逐渐降低H2O2的含量,表明干旱条件下,外施ABA能增强甘蔗的抗氧化防护系统,提高抗旱性。 | 李长宁 Manoj Kumar SRIVASTAVA 农倩 李杨瑞 | 2010 | 作物学报2010,36,5: | 73 |
| 2 | Mechanism and its regulation of tumor-induced angiogenesis显示文摘Tumor angiogenesis is the proliferation of a network of blood vessels that penetrates into cancerous growths, supplying nutrients and oxygen and removing waste products. The process of angiogenesis plays an important role in many physiological and pathological conditions. Solid tumors depend on angiogenesis for growth and metastasis in a hostile environment. In the prevascular phase, the tumor is rarely larger than 2 to 3 mm3 and may contain a million or more cells. Up to this size, tumor cells can obtain the necessary oxygen and nutrient supplies required for growth and survival by simple passive diffusion. The properties of tumors to release and induce several angiogenic and antiangiogenic factors which play crucial roles in regulating endothelial cell (EC) proliferation, migration, apoptosis or survival, cell-cell and cell-matrix adhesion through different intracellular signaling are thought to be the essential mechanisms during tumor-induced angiogenesis. Tumor angiogenesis actually starts with tumor cells releasing molecules that send signals to surrounding normal host tissue. This signaling activates certain genes in the host tissue that, in turn, make proteins to encourage growth of new blood vessels. In this review, we focus the mechanisms of tumor-induced angiogenesis, with an emphasis on the regulatory role of several angiogenic and anti-angiogenic agents during the angiogenic process in tumors. Advances in understanding the mechanisms of tumor angiogenesis have led to the development of several most effective antiangiogenic and anti-metastatic therapeutic agents and also have provided several techniques for the regulation of cancer's angiogenic switch. The suggestion is made that standard cytotoxic chemotherapy and angiogenesis inhibitors used in combination may produce complementary therapeutic benefits in the treatment of cancer. | Manoj Kumar Gupta | 2003 | World Journal of Gastroenterology2003,9,6: | 51 |
| 3 | A review of TiO_2 nanoparticles显示文摘Climate change and the consumption of non-renewable resources are considered as the greatest problems facing humankind.Because of this,photocatalysis research has been rapidly expanding.TiO2 nanoparticles have been extensively investigated for photocatalytic applications including the decomposition of organic compounds and production of H2 as a fuel using solar energy. This article reviews the structure and electronic properties of TiO2,compares TiO2 with other common semiconductors used for photocatalytic applications and clarifies the advantages of using TiO2 nanoparticles.TiO2 is considered close to an ideal semi- conductor for photocatalysis but possesses certain limitations such as poor absorption of visible radiation and rapid recombination of photogenerated electron/hole pairs.In this review article,various methods used to enhance the photocatalytic characteristics of TiO2 including dye sensitization,doping,coupling and capping are discussed.Environmental and energy applications of TiO2, including photocatalytic treatment of wastewater,pesticide degradation and water splitting to produce hydrogen have been summarized. | GUPTA Shipra Mital TRIPATHI Manoj | 2011 | Chinese Science Bulletin2011,56,16: | 31 |
| 4 | 生长抑素受体2基因转染抑制胰腺肿瘤细胞生长机制的探讨显示文摘目的 探讨生长抑素受体 2 (SSTR2 )基因转染抑制体内胰腺肿瘤生长的效果及其机制。方法 利用lipofectAMINE将人类SSTR2全长cDNA转染导入胰腺癌细胞株PC 3中 ,G4 18筛选出阳性克隆 ;免疫组织化学SABC法和RT PCR检测生长抑素受体 2的稳定表达。分别将表达生长抑素受体2的PC 3细胞 (实验组 )和空载体对照组及阴性对照组的PC 3细胞异种移植到无胸腺小鼠体内。TUNEL法测定这些细胞形成的胰腺肿瘤细胞凋亡指数 (AI) ;免疫组织化学SP法测定凋亡相关基因Bcl 2和Bax的表达 ,以及肿瘤微血管密度 (MVD)。另外 ,比较 3组裸鼠之间胰腺肿瘤的大小和重量。结果 实验组胰腺肿瘤细胞AI(3 39%± 0 84 % )显著高于空载体对照组 (0 6 9%± 0 0 8% )和阴性对照组 (0 6 8%± 0 0 9% ) (P <0 0 5 )。与空载体对照组和阴性对照组相比 ,实验组Bcl 2蛋白表达显著降低 ,Bax蛋白的表达则显著升高 (P <0 0 5 ) ;实验组MVD(6 3± 1 7)显著低于空载体对照组 (12 6±1 7)和阴性对照组 (13 5± 1 9) (P <0 0 5 )。另外 ,实验组胰腺肿瘤的大小和重量也显著低于空载体对照组和阴性对照组 (P <0 0 5 )。空载体对照组与阴性对照组之间未观测到任何有差异的指标 (P >0 0 5 )。结论 大多数人胰腺癌细胞中缺失SSTR2基因 ,生长抑? | Kumar Manoj 刘正人 田锐 秦仁义 | 2004 | 中华医学杂志2004,84,9: | 25 |
| 5 | Outcomes of severe sepsis and septic shock patients after stratifi cation by initial lactate value显示文摘BACKGROUND: In the setting of severe sepsis and septic shock, mortality increases when lactate levels are ≥ 4 mmol/L. However, the consequences of lower lactate levels in this population are not well understood. The study aimed to determine the in-hospital mortality associated with severe sepsis and septic shock when initial lactate levels are < 4 mmol/L.METHODS: This is a retrospective cohort study of septic patients admitted over a 40-month period. Totally 338 patients were divided into three groups based on initial lactate values. Group 1 had lactate levels < 2 mmol/L; group 2: 2–4 mmol/L; and group 3: ≥ 4 mmol/L. The primary outcome was in-hospital mortality.RESULTS: There were 111 patients in group 1, 96 patients in group 2, and 131 in group 3. The mortality rates were 21.6%, 35.4%, and 51.9% respectively. Univariate analysis revealed the mortality differences to be statistically significant. Multivariate logistic regression demonstrated higher odds of death with higher lactate tier group, however the findings did not reach statistical significance.CONCLUSION: This study found that only assignment to group 3, initial lactic acid level of ≥ 4 mmol/L, was independently associated with increased mortality after correcting for underlying severity of illness and organ dysfunction. However, rising lactate levels in the other two groups were associated with increased severity of illness and were inversely proportional to prognosis. | Kimberly A. Chambers Adam Y. Park Rosa C. Banuelos Bryan F. Darge Bindu H. Akkanti Annamaria Macaluso Manoj Thangam Pratik B. Doshi | 2018 | World Journal of Emergency Medicine2018,9,2: | 26 |
| 6 | Alteration of somatostatin receptor subtype 2 gene expression in pancreatic tumor angiogenesis显示文摘AIM: To explore the difference of somatostatin receptor subtype 2 (SST2R) gene expression in pancreatic cancerous tissue and its adjacent tissue, and the relationship between the change of SST2R gene expression and pancreatic tumor angiogenesis related genes. METHODS: The expressions of SST2R, DPC4, p53 and ras genes in cancer tissues of 40 patients with primary pancreatic cancer, and the expression of SST2R gene in its adjacent tissue were determined by immunohistochemiscal LSAB method and EnVisionTM method. Chi-square test was used to analyze the difference in expression of SST2R in pancreatic cancer tissue and its adjacent tissue, and the correlation of SST2R gene expression with the expression of p53, ras and DPC4 genes.RESULTS: Of the tissue specimens from 40 patients with primary pancreatic cancer, 35 (87.5%) cancer tissues showeda negative expression of SST2R gene, whereas 34 (85%) a positive expression of SST2R gene in its adjacent tissues. Five (12.5%) cancer tissues and its adjacent tissues simultaneously expressed SST2R. The expression of SST2R gene was markedly higher in pancreatic tissues adjacent to cancer than in pancreatic cancer tissues (P<0.05). The expression rates of p53, ras and DPC4 genes were 50%,60% and 72.5%, respectively. There was a significant negative correlation of SST2R with p53 and ras genes x1^2=9.33,x2^2=15.43, P<0.01), but no significant correlation with DPC4 gene x2=2.08, P >0.05). CONCLUSION: There was a significant difference of SST2R gene expression in pancreatic cancer tissues and its adjacent tissues, which might be one cause for the different therapeutic effects of somatostatin and its analogs on pancreatic cancer patients. There were abnormal expressions of SST2R, DPC4, p53 and ras genes in pancreatic carcinogenesis, and moreover, the loss or decrease of SST2R gene expression was significantly negatively correlated with the overexpression of tumor angiogenesis correlated p53 and ras genes, suggesting that SST2R gene together with p53 and ras genes may participate in pancreatic cancerous angiogenesis. | Manoj Kumar Gupta | 2004 | World Journal of Gastroenterology2004,10,1: | 26 |
| 7 | Survivin expression induced by doxorubicin in cholangiocarcinoma显示文摘AIM:To study the role of survivin expression induced by chemotherapy agent (doxorubicin) in the development and anti-chemotherapy of cholangiocarcinoma.METHODS:Expression of survivin was detected by SP immunohistochemical technique in 33 cases of cholangiocarcinorna,28 cases of adjacent noncancerous bile duct, and 5 cases of benign bile duct lesions. Low concentration of doxorubicin (0.05mg/l) was added in cultured cholangiocarcinoma cell line (QBC939). The expression of survivin was detected by RT-PCR and Western blot at 24h and 48h after adding doxorubicin.RESULTS:Survivin was expressed in 24 of 33 cholangiocarcinoma cases (72.7%).In contrast,no expression of survivin in adjacent noncancerous and benign bile duct lesions was observed (P<0.01). No correlation was found between survivin expression and clinical features.Doxorubicin could markedly (P<0.001) up-regulate survivin mRNA and protein expression of QBC939 cells.CONCLUSION:Overexpression of survivin in cholangiocarcinomas may play an important role in the development of cholangiocarcinoma, its relationship with prognosis of cholangiocarcinoma deserves further investigation. Higher expression of survivin is induced by doxorubicin in QBC939.Survivin expression may resist apoptosis induced by chemotherapy agents. | Manoj Kumar | 2004 | World Journal of Gastroenterology2004,10,3: | 21 |
| 8 | CeO_2-TiO_2 as a visible light active catalyst for the photoreduction of CO_2 to methanol显示文摘The performance of CeO2-TiO2 photocatalyst for the photocatalytic reduction of CO2 into methanol was studied under visible light irradiation. The as-prepared catalysts were characterized for their structural, textural and optical properties using X-ray diffraction(XRD), field emission scanning electron microscopy(FESEM), X-ray photoelectron spectroscopy(XPS), nitrogen physisorption analysis, UV-vis spectroscopy and photoluminescence(PL) spectroscopy. The characterization results indicated that the presence of CeO2 stabilized the anatase phase of TiO2, decreased its crystallite size, increased the surface area, reduced the band gap energy and lowered the rate of electron-hole pair recombination. The CeO2-TiO2 photocatalyst showed an increased methanol yield of 18.6 μmol/g under visible light irradiation, compared to the bare TiO2(6.0 μmol/g). | Hamidah Abdullah Maksudur R.Khan Manoj Pudukudy Zahira Yaakob Nur Aminatulmimi Ismail | 2015 | Journal of Rare Earths2015,33,11: | 15 |
| 9 | Antioxidant and antipyretic properties of methanolic extract of Amaranthus spinosus leaves显示文摘Objective:Methanolic extract of Amaranthus spinosus(A.spinosus) leaves was screened for antioxidant and antipyretic activities.Methods:Antioxidant activity was measured by l,l-diphenyl-2-picryl-hydrazile(DPPH) free radical scavenging,superoxide anion radical scavenging,hydroxyl free radical scavenging,nitric oxide radical scavenging,2,2 -azinobis-3- ethylbenzothiazole-6-sulfonic acid(ABTS) radical scavenging assays and total phenolic content was also determined.Antipyretic activity of methanolic extract of A.spinosus was measured by yeast induced pyrexia method at concentration of 200 and 400 mg/kg using paracetamol as standard drug.Results:Methanolic extract of A.spinosus showed potent antioxidant activity.The IC50 value was(87.50±3.52)μg/mL,(98.80±1.40)μg/mL,(106.25±0.20)μg/mL,(88.70±0.62)μg/mL and(147.50±2.61)μg/mL for DPPH,superoxide,hydroxyl,nitric oxide and ABTS radical scavenging activities.Methanolic extract of A spinosus showed significant(P<0.01) antipyretic activity. | Bagepalli Srinivas Ashok Kumar Kuruba Lakshman Jayaveera KN Devangam Sheshadri Shekar Avalakondarayappa Arun Kumar Bachappa Manoj | 2010 | Asian Pacific Journal of Tropical Medicine2010,3,9: | 15 |
| 10 | AZ31镁合金磷酸镁转化膜的腐蚀性能(英文)显示文摘通过在含Mg^(2+)和 PO_4^(3-)离子的溶液中进行浸泡,在AZ31镁合金上制备磷酸镁转化膜以增强其抗腐蚀性能。经磷化处理20 min后,AZ31镁合金上的磷酸镁转化膜呈微裂纹状结构,厚度均匀(约为2.5μm)。X射线能谱分析和X射线光电子谱分析表明,磷酸镁转化膜由磷酸镁和氢氧化镁或氧化镁组成。磷酸镁转化膜对AZ31镁合金可起到强烈的保护作用。磷酸镁转化膜的腐蚀电流大幅降低,约为未覆膜表面腐蚀电流的3%。在0.5 mol/L Na Cl溶液中的腐蚀恶化时间由10 min延长至24 | Nguyen Van PHUONG Manoj GUPTA Sungmo MOON | 2017 | Transactions of Nonferrous Metals Society of China2017,27,5: | 14 |
| 11 | Sperm membrane modulation by Sapindus mukorossi during sperm maturation显示文摘Aim:TO observe the alterations in the biochemical and biophysical changes in the sperm membrane during sperm maturation in male rats treated with the water extract of the fruit pericarp of S.mukorossi.Methods:Adult male Sprague-Dawley rats were gavaged the aqueous extract of the fruit pericarp of S.mukorossi at a dose of 50mg/kg/dfor45days.On day46,the sperm parameters were observed in idfferent sections of the epididymis and the sperm superoxide dismutase and the lipid peroxidation was edtermined and compared with the controls.The testis and epidiymis were routinely prepared for histological examination under the light microscope.Results:No significant differences in the sperm number and morphology were observed between the control and reated groups.However,a significant inhibition(P<0.05-0.01)of sperm motility in the caput,corpus and cauda regions of the epididymis was seen in the treated group.No significant histopathological changes were found in the testis and epididymis.Theimportant finding was that in the treated animals,the spermatozoa showed an abnormal distribution of the superoxide dismutase activity,being minimum in the caput and maximum in the corpus,which was just opposite to that of the controls.Conclusion:The study provides a unique observation where the plant extract alters the sperm membrane physiology without change the testicular and epididymal morphology. | Manish Nivsarkar Neeta Shrivastava Manoj Patel Harish Padh Cherian Bapu | 2002 | Asian Journal of Andrology2002,4,3: | 14 |
| 12 | A Review on Pharmacological and Analytical Aspects of Diosmetin:A Concise Report显示文摘Plants have been used as a source for food material and natural remedies for the treatment of vast range of diseases.Nature provides us remedies for the treatment of various types of disorders ranging from simple ailments to complicated diseases.Plants are known to possess different pharmacological activities due to the presence of various phytoconstituents.Flavonoids are one of the main active phytoconstituents found in fruits,vegetables,wines,tea and cocoa.Flavonoids exhibit various pharmacological activities such as antioxidant,anti-inflammatory,anti-allergic,antibacterial,oestrogenic,cytotoxic antitumoural,hepatoprotective,antithrombotic and antiviral activity.Diosmetin(3',5,7-trihydroxy-4'-methoxyflavone),the aglycone part of the flavonoid glycosides diosmin occurs naturally in citrus fruit.Although it is found in herbal medicines and plays an important role in the treatment of various ailments,only limited scientific researches have been conducted.The aim of this review is to collect all available scientific literature published on diosmetin and combine it into this paper.This review contains an overview of pharmacological activities,isolation techniques and analytical techniques for diosmetin.Thus,valuable information provided in the present review will help researchers in developing alternative methods for the treatment of diseases from diosmetin. | Kanika Patel Manoj Gadewar Vijay Tahilyani Dinesh Kumar Patel | 2013 | Chinese Journal of Integrative Medicine2013,19,10: | 11 |
| 13 | Molecular mechanism of noradrenaline during the stress-induced major depressive disorder显示文摘Chronic stress-induced depression is a common hallmark of many psychiatric disorders with high morbidity rate.Stress-induced dysregulation of noradrenergic system has been implicated in the pathogenesis of depression.Lack of monoamine in the brain has been believed to be the main causative factor behind pathophysiology of major depressive disorder(MDD) and several antidepressants functions by increasing the monoamine level at the synapses in the brain.However,it is undetermined whether the noradrenergic receptor stimulation is critical for the therapeutic effect of antidepressant.Contrary to noradrenergic receptor stimulation,it has been suggested that the desensitization of β-adrenoceptor is involved in the therapeutic effect of antidepressant.In addition,enhanced noradrenaline(NA) release is central response to stress and thought to be a risk factor for the development of MDD.Moreover,fast acting antidepressant suppresses the hyperactivation of noradrenergic neurons in locus coeruleus(LC).However,it is unclear how they alter the firing activity of LC neurons.These inconsistent reports about antidepressant effect of NA-reuptake inhibitors(NRIs) and enhanced release of NA as a stress response complicate our understanding about the pathophysiology of MDD.In this review,we will discuss the role of NA in pathophysiology of stress and the mechanism of therapeutic effect of NA in MDD.We will also discuss the possible contributions of each subtype of noradrenergic receptors on LC neurons,hypothalamic-pituitary-adrenal axis(HPA-axis) and brain derived neurotrophic factor-induced hippocampal neurogenesis during stress and therapeutic effect of NRIs in MDD. | Kenjiro Seki Satomi Yoshida Manoj Kumar Jaiswal | 2018 | Neural Regeneration Research2018,13,7: | 10 |
| 14 | Evaluation of mine scale longwall top coal caving parameters using continuum analysis显示文摘A mine-scale analysis of Longwall Top Coal Caving (LTCC) is performed using a continuum mechanics finite element solver called COSFLOW. The uniqueness of COSFLOW is that it incorporates Cosserat continuum theory in its formulation for describing the load deformation of bedded rocks. It is shown that such a continuum based code is valuable for assessing the feasibility of introducing LTCC in any mine. Various LTCC parameters, for example chock convergences, top coal failure behavior, strata cavingmechanism, abutment stresses and vertical stresses, were evaluated for a mine using COSFLOW. | Manoj Khanal Deepak Adhikary Rao Balusu | 2011 | Mining Science and Technology2011,21,6: | 9 |
| 15 | Recent Advances in Dissecting Stress-Regulatory Crosstalk in Rice显示文摘关於生命、不能生活的压力在世界范围的庄稼生产率上强加严肃的限制。到应力的一种类型的优先或同时的暴露经常影响植物反应到另外的压力,显示在表明小径的压力反应之间的广泛的重叠和串音。集成大 genomic 和 proteomic 数据集合的系统生物学途径便于管理这压力规章的串音的候选人基因的鉴定。最近,我们构造了酵母在控制反应到关於生命、不能生活的压力的三米饭蛋白质附近的二混血儿的地图,也就是有免疫力的受体 XA21,授与抵抗到克否定的细菌, Xanthomonas oryzae pv。oryzae;NH1, NPR1 的米饭 ortholog,全身的获得的抵抗的一个关键管理者;并且乙烯应答的抄写因素, SUB1A,它授与公差浸没应力。这些研究结合了介绍的 transcriptional ,合作表示分析识别了在关於生命、不能生活的压力回答的接口被放的蛋白质的一间套房,包括 激活mitogen 的蛋白质 kinase 5 ( OsMPK5 ),联系墙的 kinase 25 ( WAK25 ),蔗糖 non-fermenting-1-related 蛋白质 kinase-1 ( SnRK1 ), SUB1A 绑定蛋白质 23 ( SAB23 ),并且几个 WRKY 家庭抄写因素。新兴的证据建议这些基因通过许多机制安排在关於生命、不能生活的压力之间的串音,包括细胞的精力动态平衡和在压力荷尔蒙水杨酸酸,乙烯, jasmonic 酸,和 abscisic 酸之间的 synergistic 或对抗相互作用的修正的规定。 | Rita Sharma | 2013 | Molecular Plant2013,6,2: | 9 |
| 16 | Gene transfer of somatostatin receptor type 2 by intratumoral injection inhibits established pancreatic carcinoma xenografts显示文摘AIM: To investigate the therapeutic effect of somatostatin receptor type 2 (SSTR2) gene transfection on pancreatic carcinoma xenograftsin vivo in experimental cancers.METHODS: Human pancreatic cancer cell line Panc-1 was inoculated subcutaneously into the back of nude mice. When tumor nodules were grown as large as about 5 mm×5 mm days after inoculation, the mice were randomly divided into 3 groups (6 mice in each group). Group Ⅰ served as untreated control group. Group Ⅱ received an intratumoral injection of a combination of human cytomegalovirus promoter-6C (pCMV-6C) and lipofectamine 2000. Group Ⅲ received an intratumoral injection of a combination of pCMV-6C-SSTR2 and lipofectamine 2000. The rate of tumor growth was compared among these three groups. The expression of SSTR2 in these tumors was detected by immunohistochemistry and Western-blot. Apoptosis index (AI) in these tumors was examined by using TUNEL in situ.RESULTS: Intratumoral injection of a combination of pCMV-6C-SSTR2 and lipofectamine 2000 resulted in the expression of SSTR2 protein. The tumor size and weight in group Ⅲ (0.318±0.098 cm3, and 0.523±0.090 g,respectively) were significantly lower than those in group Ⅰ (2.058±0.176 cm3, and 1.412±0.146 g, respectively) and group Ⅱ (2.025±0.163 cm3, and 1.365±0.116 g, respectively)(P<0.05) The AI in group Ⅲ (1.47±0.13%) was significantly higher than that in group Ⅰ (0.56±0.09%) and group Ⅱ (0.57±0.11%) (P<0.05). But there were no significant differences between groups Ⅰ and Ⅱ.CONCLUSION: Our data demonstrate that re-expression of SSTR2 gene has antitumor effects on experimental pancreatic cancer. Restoration of SSTR2 gene expression through gene transfer in vivo might be a potential gene therapy strategy for human pancreatic cancer. | Manoj Kumar | 2005 | World Journal of Gastroenterology2005,11,4: | 9 |
| 17 | Rice Bran Oil: Emerging Trends in Extraction, Health Benefit, and Its Industrial Application显示文摘Rice bran oil(RBO)is unique among edible vegetable oils because of its unique fatty acid composition,phenolic compound(γ-oryzanol,ferulic acid)and vitamin E(tocopherol and tocotrienol).It has become a great choice of cooking oil because of its very high burning point,neutral taste and delicate flavour.Non-conventional methods of RBO extraction are more efficient and environmentally friendly than conventional extraction methods.Advances in RBO extraction using innovative extraction strategies like super/sub-critical CO_(2),microwave-assisted,subcritical H_(2)O,enzyme-assisted aqueous and ultrasoundassisted aqueous extraction methods have proven to significantly improve the yields along with improved nutritional profile of RBO.The compositions and strategies for stabilization of RBO are well discussed.The constituents are present in the RBO contribute to antioxidative,anti-inflammatory,antimicrobial,antidiabetic and anti-cancerous properties to RBO.This has helped RBO to become an important substrate for the application in food(cooking oil,milk product and meat product)and non-food industries(polymer,lubricant,biofuel,structural lipid and cosmetic).This review provided comprehensive information on RBO extraction methods,oil stabilization,existing applications and health benefits. | Sneh PUNIA Manoj KUMAR Anil Kumar SIROHA Sukhvinder Singh PUREWAL | 2021 | Rice science2021,28,3: | 8 |
| 18 | 水分胁迫下外源ABA对甘蔗叶绿素荧光特性的影响(英文)显示文摘以抗旱甘蔗品种ROC 22与不抗旱品种ROC 16为材料,研究水分胁迫条件下外源ABA对2个甘蔗品种叶片叶绿素含量及叶绿素荧光特性的影响。结果表明,水分胁迫下,ROC 16的叶绿素降解程度高于ROC 22,而外源ABA能够缓解这种降解作用;随着水分胁迫的加剧,两个甘蔗品种叶片的基础荧光(Fo)显著升高,PSⅡ原初光能转化效率(Fv/Fm)和PSⅡ的潜在活性(Fv/Fo)显著下降,光适应下PSⅡ最大光化学效率(Fv’/Fm’)、PSⅡ实际光化学效率(ΦPS2)、光化学猝灭系数(qP)显著下降,表明水分胁迫使甘蔗叶片PSⅡ反应中心受到伤害,施加外源ABA能部分减轻这种伤害,以对ROC 22作用尤为显著。 | Manoj Kumar Srivastava 李长宁 农倩 李杨瑞 | 2009 | 广西农业科学2009,40,11: | 8 |
| 19 | 硅肥对蔗地土壤性状、甘蔗叶片营养及产量的影响(英文)显示文摘【目的】在大棚条件下进行甘蔗硅肥施用量研究,阐明硅肥对甘蔗生长、营养以及土壤特性等的影响。【方法】以新台糖22号为试验材料,以每桶26gN+1.76gP+20gK为对照,设置T1~T6(20、40、60、80、120and150g/桶)6个不同硅肥用量,研究不同施硅水平对甘蔗的影响。【结果】硅肥处理的甘蔗+1叶N、P、Ca、Mg、Si含量较对照有一定提高,其中120g/桶处理的甘蔗+1叶含硅量比对照增加92%。不同施硅水平对甘蔗土壤理化性状具有显著影响,SOM和有效P较对照显著降低,120g/桶处理的有效Si含量较对照增加137%,150g/桶处理的交换性Ca和Mg分别较对照增加117.9%和86.0%,pH均有一定提高。硅肥处理对甘蔗株高和产量增加有显著影响,对甘蔗干物质和产糖量的提高也有促进作用,但不显著。【结论】硅肥对甘蔗生产以及土壤理化性状具有一定正效应,可结合常规施肥进一步推广从而提高甘蔗生产。 | 黄海荣 徐林 BOKHTIAR S M MANOJ Kumar Srivastav 李杨瑞 杨丽涛 | 2011 | 南方农业学报2011,42,7: | 8 |
| 20 | Phacoemulsification versus small incision cataract surgery in patients with uveitis显示文摘AIM: To compare the safety and efficacy of phacoemulsification and small incision cataract surgery(SICS) in patients with uveitic cataract.·METHODS: In a prospective, randomized multi-centric study, consecutive patients with uveitic cataract were randomized to receive phacoemulsification or manual SICS by either of two surgeons well versed with both the techniques. A minimum inflammation free period of 3mo(defined as less than 5 cells per high power field in anterior chamber) was a pre-requisite for eligibility for surgery. Superior scleral tunnel incisions were used for both techniques. Improvement in visual acuity post-operatively was the primary outcome measure and the rate of post-operative complications and surgical time were secondary outcome measures, respectively. Means of groups were compared using t-tests. One way analysis of variance(ANOVA) was used when there were more than two groups. Chi-square tests were used for proportions. Kaplan Meyer survival analysis was done and means for survival time was estimated at 95%confidence interval(CI). A P value of <0.05 was considered statistically significant.·RESULTS: One hundred and twenty-six of 139 patients(90.6%) completed the 6-month follow-up. Seven patients were lost in follow up and another six excluded due to either follow-up less than six months(n=1) or inability implant an intraocular lens(IOL) because of insufficient capsular support following posterior capsule rupture(n=5). There was significant improvement in vision after both the procedures(paired t-test; P <0.001). On first postoperative day, uncorrected distance visual acuity(UDVA) was 20/63 or better in 31(47%)patients in Phaco group and 26(43.3%) patients in SICS group(P=0.384). The mean surgically inducedastigmatism(SIA) was 0.86 ±0.34 dioptres(D) in the phacoemulsification group and 1.16 ±0.28 D in SICS group. The difference between the groups was significant(t-test, P =0.002). At 6mo, corrected distance visual acuity(CDVA) was 20/60 or better in 60(90.9%) patients in Phaco group and 53(88.3%) in the manual SICS group(P =0.478). The mean surgical time was significantly shorter in the manual SICS group(10.8±2.9 versus 13.2±2.6min)(P <0.001). Oral prednisolone, 1 mg/kg body weight was given 7d prior to surgery, continued post-operatively and tapered according to the inflammatory response over 4-6wk in patients with previously documented macular edema, recurrent uveitis, chronic anterior uveitis and intermediate uveitis. Rate of complications like macular edema(Chi-square, P =0.459),persistent uveitis(Chi-square, P =0.289) and posterior capsule opacification(Chi-square, P =0.474) were comparable between both the groups.·CONCLUSION: Manual SICS and phacoemulsification do not differ significantly in complication rates and final CDVA outcomes. However, manual SICS is significantly faster. It may be the preferred technique in settings where surgical volume is high and access to phacoemulsification is limited, such as in eye camps. It may also be the appropriate technique for uveitic cataract under such circumstances. | Rahul Bhargava Prachi Kumar Shiv Kumar Sharma Manoj Kumar Avinash Kaur | 2015 | International Journal of Ophthalmology(English edition)2015,8,5: | 8 |