Impulse Controllability and Impulse Elimination in Rectangular Descriptor Systems

Vikas Kumar Mishra,Nutan Kumar Tomar,Mahendra Kumar Gupta 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10

In this paper, a decomposition of system matrices of linear time invariant rectangular descriptor systems is proposed. Using the decomposition, a technique is developed to check the impulse controllability for rectangular descriptor systems. Necessary and sufficient conditions are stated and proved to design a proportional plus derivative feedback such that the closed loop system is free of impulse. Examples are given to illustrate the presented theory.

Physiological Mechanism and Nutrient Management Strategies for Flood Tolerance in Rice Grown in Lowland Flood Prone Ecosystem

Sharad Kumar Dwivedi,Santosh Kumar,Narayan Bhakta,Ashish Kumar Srivastava,Janki Sharan Mishra,Virendar Kumar,B H Kumara,Bhagwati Prasad Bhatt,Sudhanshu Singh 한국작물학회 2018 Journal of crop science and biotechnology Vol.21 No.4

In flood-prone areas, rice must have flood tolerance characteristics either through genotypic selections or by nutrient application management strategies. The current study was conducted at ICAR Research Complex for Eastern Region, Patna during the wet season to investigate the effect of post-flood nutrient application methods on submerged rice survival and productivity. Our study showed that the 3-d submergence duration had no effect on the survival (100%) of 21-day-old seedlings but survival percentage decreased to 97 and 65% at 7-d and 11-d submergence, respectively. Total chlorophyll, total soluble sugar, and starch concentrations also exhibited a similar pattern of decline. The activity of anti-oxidative defense enzymes (CAT, POX, SOD, and APX), recorded just after de-submergence was found to be 1.5-10-foldhigher than before submergence, increasing with the increase in the severity of stress. Additional post-flood application of K2O and N at 5-6 days after de-submergence led to the improvement in photosynthetic rate, yield attributes, and grain yield. An additional 10 kg each of N and K2O produced maximum 1000-grain weight and higher grain yield and harvest index. After submergence, the meta-analysis exhibited a significant reduction in total chlorophyll concentration due to increasing submergence duration, whereas the significantly higher activity of antioxidants was recorded irrespective of submergence duration. In association with the better anti-oxidative defense mechanism of Sub1 varieties, the additional doses of N and K2O at 5-d after de-submergence significantly enhanced the survival, post-flood recovery, and the rate of photosynthesis after de-submergence. These nutrient management options can provide an opportunity to explore the productivity potential of the SUB1-introgressed variety under natural flash-flood conditions, helping to cope with the existing problems in flood-prone areas. The findings of the study suggest that a proper time and method of N application with basal P can significantly contribute to higher rice yield in flash-flood prone areas.

Maternal Nutrition and Inadequate Gestational Weight Gain in Relation to Birth Weight: Results from a Prospective Cohort Study in India

( Kumar Guru Mishra ),( Vikas Bhatia ),( Ranjeeta Nayak ) 한국임상영양학회 2020 Clinical Nutrition Research Vol.9 No.3

Inadequate/excessive gestational weight gain (GWG) can cause adverse pregnancy outcomes and only few studies have described patterns of weight gain in Indian women. Also, studies pertaining to dietary intake throughout gestation are insufficient. This prospective cohort study was conducted to evaluate GWG and nutrient intake in all trimesters of pregnancy and investigate the relationship between themselves along with that of birth weight (BW). Our study was carried out in a population-based prospective birth cohort in Odisha, India. The 418 pregnant women were followed till delivery with measurements of maternal weight, weight gain throughout gestation, and BW. Macronutrients were assessed based on a 24-hour dietary recall method in each trimester. Women characterized by under-weight pre-pregnancy body mass index (BMI) were 16.20%, and a total of 6.45% did not comply with current weight gain recommendations. Particularly, overweight and obese women gained more weight than recommended. In a multivariate analysis GWG correlated significantly with BMI (p = 0.03), total calorie intake (p < 0.001) and fat intake (p < 0.001), while BW of newborns correlated significantly with adequacy of weight gain and fat intake (p < 0.001). Though measures are taken by health workers to record the weight but nutritional counseling is not being provided regularly. A high priority should be given to increase awareness among general population regarding the importance of diet in pregnancy and how to adhere to the balanced diet for optimal growth of child.

Inter-Korean Relations and the Role of US in the Post-Cold War Era

Mishra Sandip Kumar 한국인도학회 2006 印度硏究 Vol.11 No.2

Recent advances in <i>N</i>-heterocycles synthesis through catalytic C−H functionalization of azobenzenes

Mishra, Neeraj Kumar,Park, Jihye,Oh, Hyunjung,Han, Sang Hoon,Kim, In Su Elsevier 2018 Tetrahedron Vol.74 No.47

<P><B>Abstract</B></P> <P>Azobenzenes are well known as crucial structural motifs used in material sciences, nonlinear optical devices, and pharmaceuticals. They also represent an important class of organic intermediates for the transformation of azo and azoxy groups into various useful molecules. Azo groups have a dual character, both electronically increasing the reactivity of the aryl ring and controlling the site-selectivity of the reaction, which significantly increases their utility in organic synthesis. As a complement to previous protocols, the strategy of transition-metal-catalyzed C–H activation of azobenzenes using various coupling partners, such as alkenes, alkynes, aldehydes, diazo esters, organic azides, and sulfoxonium ylides, has recently emerged as a powerful tool to create the corresponding heterocycles. Thus, this review focuses on the recent progress on the direct synthesis of <I>N</I>-heterocycles via C(sp<SUP>2</SUP>)–H functionalization of azobenzenes using transition-metal catalysis. This review includes most of the reported methods until the beginning of 2018.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

A new strategy for integrating semiconducting SWCNTs into pseudo-cubic In₂O₃ heterostructures for solid-state symmetric supercapacitors with a superior stability and specific-capacitance

Mishra, Rajneesh Kumar,Ryu, Jae Hyeon,Kwon, Hyuck-In,Jin, Sung Hun The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.31

<P>Herein, we report a rapid one-step hydrothermal synthesis of semiconducting single-walled carbon nanotubes/pseudo-cubic In2O3 heterostructures (s-S/IHs) and successfully demonstrate LED lighting by using symmetric solid-state supercapacitors (SSCs). This is a simple, scalable, proficient and <I>in situ</I> synthesis method to harvest materials that can be engaged as cutting-edge electrode materials for high-energy SSCs. The cost effective and environment-friendly s-S/IH conveys excellent electrochemical properties with a high specific capacitance (641.1 F g<SUP>−1</SUP> at a current density of 1.8 A g<SUP>−1</SUP>) and tremendous rate capabilities with an excellent capacitance (335.1 F g<SUP>−1</SUP> at a current density of 3.8 A g<SUP>−1</SUP>). The SSC devices with a maximum potential window of 1.2 V are fabricated by using two similar s-S/IH electrodes in order to justify the outstanding performance for real-life energy storage devices. Notably, the SSC devices offered a high specific capacitance (139.5 F g<SUP>−1</SUP> at 2 A g<SUP>−1</SUP>), a high energy density (6.9 W h kg<SUP>−1</SUP> at 234.3 W kg<SUP>−1</SUP>), an ultra-high power density (789.3 W kg<SUP>−1</SUP> at 4.6 W h kg<SUP>−1</SUP>), and a remarkable cycling stability (91.8% specific capacitance retention rate after 5000 cycles). These extraordinary findings illustrate an insight into designing a nanocube In2O3 lattice deformed by very small concentration of semiconducting single-walled carbon nanotubes that are economically affordable and environmentally harmonious for the fabrication and demonstration of high performance SSC devices.</P>

Facile production of 2,5-diformylfuran from base-free oxidation of 5-hydroxymethyl furfural over manganese–cobalt spinels supported ruthenium nanoparticles

Mishra, Dinesh Kumar,Cho, Jin Ku,Kim, Yong Jin THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2018 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.60 No.-

<P><B>Abstract</B></P> <P>This work reports manganese–cobalt spinels (MnCo<SUB>2</SUB>O<SUB>4</SUB>) supported ruthenium (Ru) nanoparticles, Ru/MnCo<SUB>2</SUB>O<SUB>4</SUB>, efficiently catalyzed 5-hydroxymethyl furfural (HMF) oxidation to 2,5-diformylfuran (DFF) with high yield 98.3% at 130°C and 1.0MPa of O<SUB>2</SUB> pressure in toluene used as solvent under base-free conditions. A new class of spinels MnCo<SUB>2</SUB>O<SUB>4</SUB> having multiple valence states of Mn and Co was synthesized by using simple co-precipitation method and used as support with ruthenium nanoparticles as heterogeneous catalyst. The reusability tests of catalyst Ru/MnCo<SUB>2</SUB>O<SUB>4</SUB> were also carried out and was found to be recyclable up to several consecutive cycles without significance loss of original activity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Facile production of DFF with 98.3% yield from base-free oxidation of HMF. </LI> <LI> Toluene is considered to be the best solvent for selective product DFF. </LI> <LI> Highly active manganese–cobalt spinels supported ruthenium nanoparticles. </LI> <LI> Ru/MnCo<SUB>2</SUB>O<SUB>4</SUB> is recyclable up to several consecutive times. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Hydroxyapatite supported gold nanocatalyst for base-free oxidative esterification of 5-hydroxymethyl-2-furfural to 2,5-furan dimethylcarboxylate with air as oxidant

Mishra, Dinesh Kumar,Cho, Jin Ku,Yi, Yongjin,Lee, Hye Jin,Kim, Yong Jin Elsevier 2019 Journal of industrial and engineering chemistry Vol.70 No.-

<P><B>Abstract</B></P> <P>A series of gold (Au) nanocatalysts has been prepared for base-free protocol-oxidative esterification of lignocellulosic biomass derived 5-hydroxymethyl-2-furfural (HMF) to 2,5-furan dimethylcarboxylate (FDMC) in the presence of air. The prepared Au-based nanocatalysts are thoroughly characterized by various analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N<SUB>2</SUB>-physisorption (adsorption–desorption) method, inductive coupled plasma-atomic emission (ICP-AES) spectroscopy, and X-ray photoelectron spectroscopy (XPS). Moreover, the surface properties of Au-based nanocatalysts were investigated by temperature-programmed desorption of carbon dioxide (CO<SUB>2</SUB>-TPD) technique. For a comparison point of view, the activity tests of various prepared metal-based nanocatalysts have also been carried out. Among all, hydroxyapatite (HAP) supported Au nanocatalyst (Au/HAP) prepared by homogeneous deposition–precipitation (HDP) method was found to be the best to give 89.3% yield of FDMC from oxidative esterification of HMF in the presence of air. The excellent yield of FDMC could be attributed to stronger basic sites on the surface of the catalyst. Furthermore, Au/HAP nanocatalyst was simply recovered and reused, which retained its original activity even after five consecutive times without significant loss of original activity, supporting its reusability and stability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Base-free protocol-oxidative esterification of HMF to FDMC in the presence of air. </LI> <LI> Au/HAP nanocatalyst is found to be efficient for oxidative esterification of HMF. </LI> <LI> Au/HAP is prepared by simple homogeneous deposition-precipitation method. </LI> <LI> Au/HAP nanocatalyst is reused up to several consecutive times. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P> <P>A highly recyclable gold (Au) nanocatalyst has been prepared for base-free protocol-oxidative esterification of lignocellulosic biomass derived 5-hydroxymethyl-2-furfural (HMF) to 2,5-furan dimethylcarboxylate (FDMC) in the presence of air, which showed excellent yield of FDMC.</P>

Ru–NiO<i>x</i> nanohybrids on TiO₂ support prepared by impregnation-reduction method for efficient hydrogenation of lactose to lactitol

Mishra, Dinesh Kumar,Dabbawala, Aasif A.,Truong, Cong Chien,Alhassan, Saeed M.,Jegal, Jonggeon,Hwang, Jin Soo Elsevier 2018 Journal of industrial and engineering chemistry Vol.68 No.-

<P><B>Abstract</B></P> <P>Lactose is a reducing disaccharide consisting of two different monosaccharides such as galactose and glucose. The hydrogenation of lactose to lactitol is a formidable challenge because it is a complex process and several side products are formed. In this work, we synthesized Ru–Ni bimetallic nanohybrids as efficient catalysts for selective lactose hydrogenation to give selective lactitol. Ru–Ni bimetallic nanohybrids with Ru–NiO<I> <SUB>x</SUB> </I> (<I>x</I> =1, 5, and 10wt%) are prepared by impregnating Ru and Ni salts precursors with TiO<SUB>2</SUB> used as support material. Ru–Ni bimetallic nanohybrids (represented as 5Ru–5NiO/TiO<SUB>2</SUB>) catalyst is found to exhibit the remarkably high selectivity of lactitol (99.4%) and turnover frequency i.e. (374h<SUP>−1</SUP>). In contrast, monometallic Ru/TiO<SUB>2</SUB> catalyst shows poor performance with (TOF=251h<SUP>−1</SUP>). The detailed characterizations confirmed a strong interaction between Ru and NiO species, demonstrating a synergistic effect on the improvement on lactitol selectivity. The impregnation-reduction method for the preparation of bimetallic Ru–NiO/TiO<SUB>2</SUB> catalyst promoted Ru nanoparticles dispersed on NiO and intensified the interaction between Ru and NiO species. Ru–NiO/TiO<SUB>2</SUB> efficiently catalyzed the hydrogenation of lactose to lactitol with high yield/selectivity at almost complete conversion of lactose at 120°C and 55bar of hydrogen (H<SUB>2</SUB>) pressure. Moreover, Ru–NiO/TiO<SUB>2</SUB> catalyst could also be easily recovered and reused up to four runs without notable change in original activity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Highly active supported Ru–Ni bimetallic catalysts with NiO are prepared. </LI> <LI> Bimetallic Ru–5NiO/TiO<SUB>2</SUB> catalyst shows high selectivity to lactitol (99.4%). </LI> <LI> Optimization and kinetics studies of lactose hydrogenation. </LI> <LI> Bimetallic Ru–5NiO/TiO<SUB>2</SUB> catalyst is reused up to several consecutive times. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Vertical-slate-like MoS₂ nanostructures on 3D-Ni-foam for binder-free, low-cost, and scalable solid-state symmetric supercapacitors

Mishra, Rajneesh Kumar,Kushwaha, Ajay Kumar,Kim, Seungyeob,Seo, Seung Gi,Jin, Sung Hun Elsevier 2019 CURRENT APPLIED PHYSICS Vol.19 No.1

<P><B>Abstract</B></P> <P>Here, we report binder-free vertical-slate-like MoS<SUB>2</SUB> nanostructures on 3D-Ni-Foam (VSL-MoS<SUB>2</SUB>@3D-Ni foam) for low-cost high-performance solid-state symmetric supercapacitors (SSCs). The cost-effective, ecofriendly and scalable solvothermal method and its direct incorporation of VSL-MoS<SUB>2</SUB>@3D-Ni-foam yield SSCs with excellent electrochemical properties with a wide potential window of 1.0 V. Furthermore, high specific capacitance of 34.1 F g<SUP>−1</SUP> at a current density of 1.3 A g<SUP>−1</SUP>, an energy density of 4.7 W h kg<SUP>−1</SUP> at a high-power density of 650 W kg<SUP>−1</SUP>, and excellent stability with ∼82.5% capacitance retention after 10,000 cycles were demonstrated even for SSCs with a binder free MoS<SUB>2</SUB> electrodes on 3D-Ni-foam. These excellent features of the SSCs with VSL-MoS<SUB>2</SUB>@3D-Ni-foam substantiate their potential opportunity for future energy applications.</P>