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Thermal properties of glass-ceramic bonded thermal barrier coating system

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Transactions of Nonferrous Metals society of China 2015年第2期25卷 457-464页

作者： s.ghosh Bio-ceramics and Coating Division CSIR–Central Glass and Ceramic Research Institute

The thermal properties of a thermal barrier coating （TBC） system comprised of BaO-MgO-siO_2 based glass-ceramic bond coating, 8% （mass fraction） yttria stabilized zirconia （8YsZ） top coating and nimonic alloy substrate were evaluated. The thermal diffusivity and thermal conductivity of the TBC coated substrate were lower than those of bare substrate and glass-ceramic coated substrate under identical conditions. The specific heat capacity, thermal diffusivity and thermal conductivity of the TBC coated substrate increase with the increase of the temperature. Further, it is observed that the thermal conductivity of the TBC system decreases with the increase in the top coating thickness.

关键词： vglass-ceramic coating thermal barrier coating thermal properties yttria stabilized zirconia

A model to determine soiling,shading and thermal losses from PV yield data

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Clean Energy 2022年第2期6卷 372-391页

作者： s.ghosh J.N.Roy C.Chakraborty Advanced Technology Development Centre Indian Institute of Technology Kharagpur721302India Department of Electrical Engineering Indian Institute of Technology Kharagpur721302India

Apart from being a clean source of energy,photovoltaic(PV)power plants are also a source of income generation for its investors and ***,mitigation of system losses is crucial for economic operation of PV *** losses due to soiling,shading and temperature in PV plants go as high as 50%.Much of these losses are unaccounted initially,which can jeopardize the economic viability of PV *** paper aims to provide a model to determine losses due to soiling,shading and temperature using quantities like irradiance,cell temperature,DC power and current,which are readily available in PV yield data captured by the remote monitoring system,without involving any additional sensors or *** this study,soiling,shading and thermal losses were calculated using PV yield data obtained from a 30-kWp PV plant located in Kharagpur,*** results showed soiling and shading losses as high as 25.7%and 9.7%,respectively,in the month of *** loss was verified by measuring transmittance loss of coupon glasses installed in the vicinity of the *** loss was verified by shadow simulation using an architectural tool(sketchUp).Array thermal loss obtained using the proposed methodology was found to be in line with the estimated value obtained from PVsyst ***,using time-series data,the energy losses corresponding to soiling,shading and temperature effects were calculated by a numerical-integration *** monetary loss due to these energy losses thus obtained provides criteria for deciding when to mitigate the sources of these losses.

关键词： solar photovoltaics solar PV plant soiling losses solar shading losses solar PV system losses

Intestinal barrier function and metabolic/liver diseases

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Liver Research 2020年第2期4卷 81-87页

作者： siddhartha s.ghosh Jing Wang Paul J.Yannie shobha ghosh Department of Internal Medicine Virginia Commonwealth University Medical CenterRichmondVAUSA Hunter Homes McGuire Veterans Affairs Medical Center RichmondVAUSA

Dietary,environmental or genetic changes contribute to the development of several metabolic and neurological *** research efforts have been directed towards examining how these fac-tors modulate gut bacterial ***,the mechanisms by which changes in gut bacterial diversity affect host function are not completely *** barrier dysfunction is being increasingly recognized as an early or initiating step in communicating bacterial diversity-dependent changes to the ***,we review the functional composition of the intestinal barrier and describe the consequences of the breach of this *** functional layers of the intestinal barrier provide an initial defense and prevent the infiltration of bacteria or bacterial products from the gut lumen to the underlying lamina *** lymph nodes subsequently act as the first firewall where dendritic cells from the lamina propria transport the infiltrated bacteria or bacterial products during the early stages of barrier *** overwhelmed,the liver functions as the second firewall to detoxify bacterial endotoxins,such as lipopolysaccharide(LPs),and limit systemic *** translocation of LPs from the leaky gut to the liver results in liver damage or dysfunction that leads to the development of type 2 diabetes,atherosclerosis,heart disease,heart failure and also neurological dis-eases,such as Alzheimer’s and Parkinson’s ***,targeted restoration of intestinal barrier function represents a novel strategy for the attenuation of multiple diseases.

关键词： Intestinal barrier Liver dysfunction Lipopolysaccharide(LPs) Inflammation Gut-liver axis

Oblique Wave Trapping by a surface-Piercing Flexible Porous Barrier in the Presence of step-Type Bottoms

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Journal of Marine science and Application 2019年第4期18卷 433-443页

作者： H.Behera s.ghosh sRM Research Institute SRM Institute of Science and TechnologyKattankulathurTamil NaduIndia Department of Mathematics SRM Institute of Science and TechnologyKattankulathurTamil NaduIndia NLPCU Faculty of SciencesUniversitélibre de BruxellesBrusselsBelgium

The present study deals with the oblique wave trapping by a surface-piercing flexible porous barrier near a rigid wall in the presence of step-type bottoms under the assumptions of small amplitude water waves and the structural response theory in finite water *** modified mild-slope equation along with suitable jump conditions and the least squares approximation method are used to handle the mathematical boundary value *** types of edge conditions,i.e.,clamped-moored,clamped-free,moored-free,and moored-moored,are considered to keep the barrier at a desired position of *** role of the flexible porous barrier is studied by analyzing the reflection coefficient,surface elevation,and wave forces on the barrier and the rigid *** effects of step-type bottoms,incidence angle,barrier length,structural rigidity,porosity,and mooring angle are *** study reveals that in the presence of a step bottom,full reflection can be found periodically with an increase in(i)wave number and(ii)distance between the barrier and the rigid ***,nearly zero reflection can be found with a suitable combination of wave and structural parameters,which is desirable for creating a calm region near a rigid wall in the presence of a step bottom.

关键词： Oblique incident wave Wave trapping surface-piercing Flexible porous barrier Mild-slope approximation Least squares approximation

迈向知识经济2.0:实现下一波增长的可能性

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清华管理评论 2021年第5期 21-26页

作者： Partha s.ghosh 美国麻省理工学院商学院

随着知识经济2.0的深入发展,全球经济格局正在发生巨大的变化,企业亦需要进行组织变革。这种新的动力不仅会在产品设计、市场机制和价值交付流程方面掀起一波深刻的创新浪潮,而且还将大大提高组织之间相互协作的效率和创造力。同时,更... 详细信息

随着知识经济2.0的深入发展,全球经济格局正在发生巨大的变化,企业亦需要进行组织变革。这种新的动力不仅会在产品设计、市场机制和价值交付流程方面掀起一波深刻的创新浪潮,而且还将大大提高组织之间相互协作的效率和创造力。同时,更柔性的领导元素将变得很重要。

关键词：知识经济全球经济格局创新浪潮产品设计流程方面市场机制相互协作组织变革

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粉煤灰混凝土的徐变

山西建筑 1983年第Z1期 25-34页

作者： Ram s.ghosh John Timush 宋大为

以不同数量的粉煤灰和不同的粉煤灰与水泥比,混凝土抗压强度为20Mp 和55Mp,对混凝土的徐变,收缩和弹性模量的影响并在相同的工作度的情况下与普通混凝土在三天或二十八天期令相比较。与普通混凝土相比较结果表明,混凝土中应用质量较好... 详细信息

以不同数量的粉煤灰和不同的粉煤灰与水泥比,混凝土抗压强度为20Mp 和55Mp,对混凝土的徐变,收缩和弹性模量的影响并在相同的工作度的情况下与普通混凝土在三天或二十八天期令相比较。与普通混凝土相比较结果表明,混凝土中应用质量较好的粉煤灰具有相同的弹性模量和显著低的徐变与收缩,当应用中等质量的粉煤灰,以上各性均匀与普通混凝土相等。粉煤灰成功地作为火山灰应用在大坝工程与大体积混凝土结构中已有许多年,最初是为了降低价格与控制水化热,另外有的加入粉煤灰为的更有益于降低混凝土渗透性和增加抗硫酸盐侵蚀性能,近期结构混凝土要求混凝土强度达到55Mpa 和更高,为达到这个要求,推广应用粉煤灰(这成为另一个理由。)混凝土强度降低的程度可采用掺加粉煤灰利用其对混凝土有益的影响使之产生高强。确实,这种火山灰质材料已作为生产高强混凝土的基本混合材。混凝土掺加粉煤灰要达到 fc’强度令期要超过28天,由于缺乏应用粉煤灰混凝土的徐变资料,因此着手进行粉煤灰对混凝土的徐变,收缩和弹性模量影响的试验以补其资料之不足。

关键词：徐变粉煤灰粉尘硅酸盐水泥波特兰水泥混凝土无机非金属材料水泥配制弹性模量弹性系数

Rourkela钢厂转炉溅渣护炉工艺的实施与发展

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现代冶金（内蒙古） 2003年第2期 34-36,41页

作者： s.ghosh 张怀军曹跃

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高速拉伸变形中的热传递

国际纺织导报 2001年第Z1期29卷 64-66页

作者： s.ghosh st.Lucas 兰平沈新元纺织技术研究所美国纺织技术研究所美国　　

对高速拉伸变形加工中的短程高温加热器用集总容量方法建立了热传递数学模型,可预测变形加工中的纱线温度.

关键词：高速拉伸变形,加热器,数学模型

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棉纤维表面还原糖的近红外定量分析

纤维标准与检验 1990年第1期 16-19页

作者： s.ghosh R.B.Roy 马建兴

1.引言棉的粘性早已成为一个影响成纱生产效率的阵发性问题。梳棉机、细纱机的罗拉及其它部件上出现积聚物使问题变得突出了。遇到不良天气条件,这种情况还会恶化。在梳棉机、并条机、精梳机和细纱机上最易看到这种积聚现象。此外,缠卷... 详细信息

1.引言棉的粘性早已成为一个影响成纱生产效率的阵发性问题。梳棉机、细纱机的罗拉及其它部件上出现积聚物使问题变得突出了。遇到不良天气条件,这种情况还会恶化。在梳棉机、并条机、精梳机和细纱机上最易看到这种积聚现象。此外,缠卷罗拉更是屡见不鲜。众所周知,棉的粘性是由白蝇和蚜虫分泌物所致,通常称为蜜露。其它的植物糖和棉籽油也会产生粘性。

关键词：棉纤维还原糖定量分析