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| 1 | Core Shell Au Ag Nanoparticles in Dielectric Nanocomposites with Plasmon-Enhanced Fluorescence: A New Paradigm in Antimony Glasses显示文摘The nano era demands the synthesis of new nanostructured materials,if possible by simplified techniques,with remarkable properties and versatile applications.Here,we demonstrate a new single-step reproducible melt-quench methodology to fabricate core-shell bimetallic(Au0 Ag0)nanoparticles(2889 nm)embedded glasses(dielectrics)by the use of a new reducing glass matrix,K_(2)O B_(2)O_(3) Sb_(2)O_(3)(KBS)without applying any external reducing agent or multiple processing steps.The surface plasmon resonance(SPR)band of these nanocomposites embedded in KBS glass is tunable in the range 554-681 nm.More remarkably,taking advantage of the selective reduction capability of Sb_(2)O_(3),this single-step methodology is used to fabricate inter-metallic:rare-earth ions co-embedded(AuAg:Sm^(3+))dielectric(glass)-based-dnanocomposites and study the effect of enhanced local fi eld on the red upconversion fl uorescence of Sm^(3+)ions at 636 nm.The enhancement is found to be about 2 folds.This single-step in-situ selective reduction approach can be used to fabricate a variety of hybrid-nanocomposite devices for laser based applications(see supplementary information). | Tirtha Som Basudeb Karmakar | 2009 | Nano Research2009，2，8： | 7 |
| 2 | New contributions to Goodyerinae and Dendrobiinae(Orchidaceae)in the flora of China显示文摘Eight new species from China,Cheirostylis chuxiongensis,C.yei,Myrmechis lingulata,M.longii,Bulbophyllum ximaense,B.xizangense,B.retusum and B.pulcherissimum,are described and illustrated.Cheirostylis chuxiongensis differs from C.thailandica by having 5-9 irregular and papillae-like calli on each side in the sac of the lip,epichile with entire lobes,petals narrowly obliquely obovate and an apex that is not recurved.Cheirostylis yei is easily distinguished from its relatives similar by having a long stem,pubescent ovary and sepals,epichile lobes with irregular and undulate margins,a subquadrate callus without teeth in the saccate hypochile.Myrmechis lingulata differs from M.chinensis by having a simple and lanceolate to ligulate lip,glabrous bracts and ovary,oblique and narrowly ovate petals.Myrmechis longii differs from M.pumila by having white-veined leaves,oblong-lanceolate epichile lobes,and viscidium attached to the middle of the caudicle.Bulbophyllum ximaense is easily distinguished from its relatives similar by having distant pseudobulbs,shorter scape,an inflorescence with 9-16 orange-red flowers,shorter lateral sepals with a long acuminate apex,incurved and tubular apical margins,a papillate lip disk and triangular-subulate stelidia.Bulbophyllum xizangense is easily distinguished from its relatives similar by having narrow lanceolate leaves,shorter inflorescence with 1-3 greenish-yellow flowers,falcate-ovoid lateral sepals,a lip with small lateral lobes and 3 keels at the base.Bulbophyllum retusum differs from B.spathulatum by having shorter inflorescence,peduncles with 2 tubular sheaths,dorsal sepals with a retuse apex,lateral sepals with lower edges that are connate to each other and free and divergent toward the apex,obovate petals with an acute or slightly retuse apex.Bulbophyllum pulcherissimum differs from B.lopalanthum by its 5-veined dorsal sepal,ovate-lanceolate lateral sepals,obliquely ovate-oblong petal,erose-toothed margins and obovate lip with a large,oblong basal callus,and an obtuse base.In addition,three species(Bulbophyllum frostii,B.raskotii and B.nematocaulon)are reported for the first time in China. | Ji-Dong Ya Ting Zhang Tirtha Raj Pandey Cheng Liu Zhou-Dong Han De-Ping Ye De-Ming He Qiang Liu Lan Yang Li Huang Rong-Zhen Zhang Hong Jiang Jie Cai | 2021 | Plant Diversity2021，43，5： | 5 |
| 3 | Evaluation of Gray Leaf Spot Tolerant Genotypes from CIMMYT in the Highland Maize Production Eco-systems of Bhutan显示文摘 | Tirtha Bdr. Katwal Dorji Wangchuk Lhap Dorji Namgay Wangdi Rinzin Choney | 2013 | Journal of Life Sciences2013，7，5： | 4 |
| 4 | Absolute copy number differences of Y chromosomal genes between crossbred (Bos taurus×Bos indicus) and Indicine bulls显示文摘Background: The Y chromosome in mammal is paternally inherited and harbors genes related to male fertility and spermatogenesis. The unique intra-chromosomal recombination pattern of Y chromosome and morphological difference of this chromosome between Bos taurus and Bos indicus make it an ideal model for studying structural variation, especially in crossbred(Bos taurus × Bos indicus) bulls. Copy Number Variation(CNV) is a type of genomic structural variation that gives information complementary to SNP data. The purpose of this study was to find out copy number differences of four Y chromosomal spermatogenesis-related candidate genes in genomic DNA of crossbred and purebred Indicine bulls. Result: Four Y chromosomal candidate genes of spermatogenesis namely, sex determining gene on Y chromosome(SRY), DEAD box polypeptide 3-Y chromosome(DDX3Y), Ubiquitin specific peptidase 9, Y-linked(USP9Y), testis-specific protein on Y chromosome(TSPY) were evaluated. Absolute copy numbers of Y chromosomal genes were determined by standard curve-based quantitative real time PCR. Copy numbers of SRY and TSPY genes per unit amount of genomic DNA are higher in crossbred than Indicine bulls. However, no difference was observed in DDX3Y and USP9Y gene copy numbers between two groups. Conclusion: The present study demonstrates that the structural organization of Y chromosomes differs between crossbred and Indicine bulls which are reproductively healthy as observed from analysis of semen attributes. The absolute copy numbers of SRY and TSPY genes in unit mass of genomic DNA of crossbred bulls are significantly higher than Indicine bulls. No alteration in absolute copies of DDX3Y and USP9Y gene was found between the genome of crossbred and Indicine bulls. This study suggests that the DDX3Y and USP9Y are likely to be single copy genes in the genome of crossbred and Indicine bulls and variation in Y chromosome length between crossbred and Indicine bulls may be due to the copy number variation of SRY gene and TSPY array. | Ayan Mukherjee Gulshan Dass Jagan Mohanarao G Moloya Gohain Biswajit Brahma Tirtha Kumar Datta Sachinandan De | 2013 | Journal of Animal Science and Biotechnology2013，4，4： | 3 |
| 5 | Simplex and duplex PCR assays for species specific identification of cattle and buffalo milk and cheese显示文摘 | Sachinandan De Biswajit Brahma Shamik Polley Ayan Mukherjee Deepak Banerjee Moloya Gohaina Karan Pratap Singh Rameswar Singh Tirtha Kumar Datta Surender Lal Goswami | 2010 | Food Control2010，，5： | 1 |
| 6 | RNA interference in protozoan parasites显示文摘 | Elisabetta U Christian T Tirtha CH | 2004 | Cellular Microbiology2004，6，： | 1 |
| 7 | In vitro depth of cure of photo activated composites 显示文摘 | Tirtha R Fan PL Dennison JB | 1982 | J Dent Res1982，61，： | 1 |
| 8 | RNA interference in protozoan parasites显示文摘 | Ullu E Christian T Tirtha C | 2004 | Cell Microbiol2004，6，6： | 1 |
| 9 | Nano Au enhanced upconver sion in dichroic Nd^3+ : Au-antimony glass nanocom posites 显示文摘 | Tirtha S Basudeb K | 2009 | Solid State Sci2009，11，5： | 1 |
| 10 | Novel sesterterpenes from Leucosceptrum canum of Nepalese Origin显示文摘 | Muhammad I C Krishna P D Tirtha M S | 2004 | Organic Letters2004，23，6： | 1 |
| 11 | Tissue-specific promoter methylation and histone modification regulate CYP19 gene expression during folliculogenesis and luteinization in buffalo ovary显示文摘 | Rachna Monga Sandeep Ghai Tirtha Kumar Datta Dheer Singh | 2011 | General and Comparative Endocrinology2011，，1： | 1 |
| 12 | Rainfall erosivity and sediment dynamics in the Himalaya catchment during the Melamchi flood in Nepal显示文摘Rainfall erosivity is an indicator of rainfall potential to cause soil erosion.The Melamchi extreme flood occurred on June-15 and recurred on July-31,2021 in Nepal.During these flooding events,a large volume of sediments were eroded,transported and deposited due to the high rainfall erosivity of the basin.In this study,the temporal and the spatial distribution of rainfall erosivity within the Melamchi River Basin was estimated and further linked to sediment discharge and concentration at various sites along the river segments.The daily rainfall data for the event year 2021 of the entire basin were used.Validation was performed by post-flooding grain size sampling.The result showed that rainfall and rainfall erosivity exhibit pronounced intensity within the Melamchi River basin,particularly at Sermathang and Tarkeghang,both located in the middle section of the basin.The average annual rainfall in the Melamchi region was 3140.39 mm with an average annual erosivity of 18302.06(MJ mm)/(ha h yr).The average daily erosivity of the basin was 358.67(MJ mm)/(ha h)during the first event and 1241(MJ mm)/(ha h)for the second event.In the upper section of sampling,the sediment size ranged from 0.1 mm to>8 mm and was poorly graded.However,the lower region had smaller sediment ranging from 0.075 mm to>4.75 mm and also well graded.The smaller size(<1 mm)sediment passing was much higher in the Chanaute(78%)and Melamchi(66.5%)river segments but the larger size(>100 mm)sediments were passed relatively higher from the Kiwil(8.20%)and Ambathan(8.39%)river segments.During premonsoon and monsoon seasons,the highest sediment concentration was found to be 563.8 g/L and 344.3 g/L in Bhimtar and the lowest was 238.5 g/L and 132.1 g/L at the Ambathan,respectively.The sediment concentration during the pre-monsoon was found to be higher than the sediment concentration during the monsoon season in the Melamchi River.The more erosive regions in the basin were associated with the presence of highly fractured rock,weathered rocks and a thrust(weak)zone.The higher rainfall erosivity at upstream and the higher sediment concentration at downstream during flooding events have coincided well in the basin.Thus,the estimation of rainfall erosivity at the catchment scale and its influences on sediment concentration in the river are crucial for erosion control measures during flooding times in the Himalaya. | Binod BANIYA TANG Qiu-hong Bhupati NEUPANE XU Xi-meng HE Li Tirtha Raj ADHIKARI Seyed Rashid Fallah SHAMSI Yam Prasad DHITAL | 2023 | Journal of Mountain Science2023，20，10： | 0 |
| 13 | Effect of recombinant and native buffalo OVGP1 on sperm functions and in vitro embryo development: a comparative study显示文摘Background: An oviduct-specific glycoprotein, OVGP1, is synthesized and secreted by non-ciliated epithelial cells of the mammalian oviduct which provides an essential milieu for reproductive functions. The present study reports the effects of recombinant buffalo OVGP1 that lacks post-translational modifications, and native Buffalo OVGP1 isolated from oviductal tissue, on frozen-thawed sperm functions and in vitro embryo development.Results: The proportion of viable sperms was greater(P < 0.05) in the recombinant OVGP1-treated group compared to the native OVGP1-treated group at 2 h, 3 h, and 4 h of incubation. The proportion of motile sperms at3 h and 4 h of incubation; and membrane-intact sperms at 4 h was greater(P < 0.05) in the native OVGP1-treated group compared to the control and recombinant OVGP1-treated groups. The proportion of capacitated and acrosome-reacted sperms was greater(P < 0.05) in the native OVGP1-treated group compared to the recombinant OVGP1 group at 4 h. The rates of cleavage of embryos and their development to the blastocyst stage were greater(P < 0.05) in the presence of either native or recombinant OVGP1 in comparison to control at 10 μg/mL concentration as compared to 5 or 20 μg/mL.Conclusions: The study suggests that both native and recombinant OVGP1 impart a positive effect on various sperm features and in vitro embryo development. However, native OVGP1 was found to have a more pronounced effect in comparison to recombinant non-glycosylated OVGP1 on various sperm functions except viability. Hence,our current findings infer that glycosylation of OVGP1 might be essential in sustaining the sperm functions but not the in vitro embryo development. | Suman Choudhary A.Kumaresan Manish Kumar Shivani Chhillar Hrudananda Malik Sudarshan Kumar Jai K.Kaushik Tirtha K.Datta Ashok K.Mohanty | 2018 | Journal of Animal Science and Biotechnology2018，9，1： | 0 |
| 14 | Diversity of higher plants in China显示文摘The Species Catalogue of China:Volume 1:Plants(SCCP)is a new,comprehensive,hardcopy inventory of Chinese higher plants that combines several datasets and references to recent taxonomic treatments.The database,with all attached additional information,is freely accessible via the internet(http://gffzz939091729a634506hn6fwckkccow669pc.ffgz.tsg.suse.edu.cn/)and on CD-ROM,and will be updated yearly.It includes bryophytes(157 families,599 genera,and 3167 specific and infraspecific taxa),lycophytes and ferns(41 families,181 genera,and 2336 specific and infraspecific taxa),gymnosperms(10 families,45 genera,and 311 specific and infraspecific taxa),and angiosperms(270 families,3227 genera,and 35873 specific and infraspecific taxa);in total 478 families,4052 genera,and 41687 specific and infraspecific taxa.Several other important statistics can also be drawn from the database,such as the distribution pattern of the four major groups of higher plants,as well as number of endemic and naturalized or cultivated genera/taxa.Entries in SCCP are also compared with Flora of China,and Flora reipublicae popularis Sinicae at the genus level.The SCCP will not only be a useful reference for floristic or biodiversity studies in China,but will also serve as a key resource to direct action and monitor progress.It is intended to be a useful resource for achieving Target 1 of the Global Strategy for Plant Conservation(GSPC). | Dan Xie Bo Liu Li-Na Zhao Tirtha Raj Pandey Hui-Yuan Liu Zhang-Jian Shan Hai-Ning Qin | 2021 | Journal of Systematics and Evolution2021，59，5： | 0 |
| 15 | Community Based Seed Production-A Sustainable Seed Production Model for Subsistence of Bhutanese Maize Farmers显示文摘 | Tirtha Bdr. Katwal Doriji Wangchuk Namgay Wangdi Rinzin Choney Lhap Dorji | 2015 | Journal of Food Science and Engineering2015，5，2： | 0 |
| 16 | 旋转电机定子线圈瞬态电压承载能力的试验研究显示文摘1引言电力系统中的电机,除了承受运行电压以外,还承受各种过电压作用。这些过电压通常被称为“瞬态电压”或“浪涌电压”,它会降低电机绝缘系统的性能。引起电压瞬态变化的主要原因是作用于系统中的自然雷电或开断现象。控制瞬态或浪涌电压幅值是可能的,但电压瞬态变化现象难以绝对避免。因此,电机绝缘系统必须能够承受瞬态电压或者浪涌电压,以便可靠运行并具有较长的使用寿命。 | 满宇光(译) 陈阳(校) | 2022 | 国外大电机2022，，1： | 0 |
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