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N. Tiwari,S. B. Singh,M. Ram 한국신뢰성학회 2010 International Journal of Reliability and Applicati Vol.11 No.2
This paper deals with the reliability analysis of a complex system, which consists of two subsystems A and B connected in series. Subsystem A has only one unit and B has two units B1 and B2. Marked process has been applied to model the complex system. Present reliability model incorporated two repairmen: supervisor and novice to repair the failed units. Supervisor is always there and the novice remains in vacation and is called for repair as per demand. The repair rates for supervisor and novice follow general and exponential distributions respectively and the failure time for both the subsystems follows exponential distribution. The model is analyzed under “Head of line repair discipline”. By employing supplementary variable technique, Laplace transformation and Gumbel-Hougaard family of copula various transition state probabilities, reliability, availability and cost analysis have been obtained along with the steady state behaviour of the system. At the end some special cases of the system have been taken.
Tiwari, N.,Singh, S.B.,Ram, M. The Korean Reliability Society 2010 International Journal of Reliability and Applicati Vol.11 No.2
This paper deals with the reliability analysis of a complex system, which consists of two subsystems A and B connected in series. Subsystem A has only one unit and B has two units $B_1$ and $B_2$. Marked process has been applied to model the complex system. Present reliability model incorporated two repairmen: supervisor and novice to repair the failed units. Supervisor is always there and the novice remains in vacation and is called for repair as per demand. The repair rates for supervisor and novice follow general and exponential distributions respectively and the failure time for both the subsystems follows exponential distribution. The model is analyzed under "Head of line repair discipline". By employing supplementary variable technique, Laplace transformation and Gumbel-Hougaard family of copula various transition state probabilities, reliability, availability and cost analysis have been obtained along with the steady state behaviour of the system. At the end some special cases of the system have been taken.
Delayed Spontaneous Thrombosis of Neglected Direct Carotid-Cavernous Fistula: A Case Report
Tiwari Sarbesh,Garg Pawan Kumar,Khera Pushpinder Singh,K.B Santosh Babu,Yadav Taruna,Sureka Binit 대한신경중재치료의학회 2020 Neurointervention Vol.15 No.2
Direct carotid-cavernous fistula (CCF) refers to direct communication between the cavernous portion of the internal carotid artery (ICA) and the cavernous sinus due to rent in the ICA, most commonly secondary to trauma. These are generally high-flow fistula and rarely resolve spontaneously. We report a case of a young male who developed features of direct CCF after trauma, was denied any treatment for 4 years, and then presented with spontaneous thrombosis of the fistula and a residual large pseudoaneurysm of the cavernous segment of the right ICA, which was subsequently managed with parent vessel occlusion.
Tiwari, C.M.,Jadhao, S.B.,Chandramoni, Chandramoni,Murarilal, Murarilal,Khan, M.Y. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.6
Eighteen growing male Murrah buffalo (Bubalus bubalis) calves were divided into three groups consisting of six animals each and fed three urea ammoniated wheat straw (UAS) -based rations supplemented with concentrate mixtures (roughage: concentrate ratio 58:42) containing deoiled ground nut cake, GNC (8%), formaldehyde treated GNC (8%) or fish meal (8%) to undertake comparative evaluation of these rations in terms of their $CH_4$ production and growth (285 d duration) potential. A digestibility trial (10 d duration) was followed by a comparative calorimetric study in respiration chamber. Dry matter (DM) intake (84.3 to $89.3g/kg\;W^{0.75}d^{-1}$) did not differ between treatments. The digestibility coefficient of DM, organic matter (OM), crude protein (CP), neutral and acid detergent fiber did not differ significantly in different diets. Urinary energy loss as a percent of gross energy (GE) was not affected by diets. Average values of $CH_4$ production were 84.3, 77.6 and 99.1 g/d and $CH_4$ energy losses as percent of gross energy were 5.7, 5.2 and 6.1 percent on .GNC, formaldehyde treated GNC and fishmeal, respectively, and did not differ significantly. When expressed per unit of digestible OM intake, $CH_4$ production (g) was lower (p<0.05) on formaldehyde treated GNC (30.6) than on untreated GNC (30.6) and fish meal (31.9). Total ME intake and heat production were similar and hence the energy balances on different diets were similar. Nutritive value of rations in terms of digestible CP and ME were similar. Average daily gain calculated on the basis of regression of fortnights on cumulative liveweight gain in calves fed on concentrate containing unprotected GNC, protected GNC and fish meal were 437.1, 483.9 and 481.6 g, respectively. This indicated that the intake of energy was sufficient to meet the requirement of calves growing at 400 g per d. However, CP intake was around 150% of the stipulated standard (Kearl, 1982). Feed conversion ratios on unprotected GNC, protected GNC and fish meal were 11.60, 11.10 and 10.4 respectively. It was concluded that because significantly (p<0.05) low $CH_4$ is produced on protected GNC (8%), it is very good and sustainable protein source in comparison to poor quality fish meal and untreated GNC to be used in concentrate mixture for supplementing UAS-based diets.
Tiwari Jagesh Kumar,Mandadi Nagesh,Sridhar Jandrajupalli,Mandal Vikramjit,Ghosh Arpita,Kardile Hemant B.,Naga Kailash C.,Shah Mohd Abas,Rawat Shashi,Venkateswarlu Vallepu,Malik Kamlesh,Bhatnagar Anuj 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
The foxglove aphid (or glasshouse potato aphid, Aulacorthum solani Kaltenbach) transmits serious potato viruses (potato virus Y, and potato leaf roll virus) which cause heavy yield losses. Our aim of this study was to pre liminary analysis of draft genome sequence to uncover virulence genes in the aphid. The genome assembly size (316.39 Mb) was very close to its genome size (318.19 Mb) estimated by flow cytometry. The genome completeness (81.8%) was confirmed by the Benchmarking Universal Single Copy Orthologs (BUSCO) analysis indicating 14.90% transposable elements (TEs) in the genome. Of total 22,021 predicted genes, 16,610 were annotated with putative functions of other aphids mainly Myzus persicae, Acyrthosiphon pisum and Diuraphis noxia. We identified virulence genes such as defensive and detoxification genes, salivary genes and chemore ceptors, insecticide resistance genes, virus transmission genes, transcription factors and mitochondrial genes. Importantly, analysis of detoxification genes particularly 53 cytochrome P450s (CYPs) indicated involvement of 23 CYPs families in aphid genome. Further, GO and KEGG pathways analyses showed gene enrichment pre dominantly with molecular function and signal transduction, respectively. Phylogeny analysis revealed genetic divergence among 12 aphid species and Au. solani is closely related with M. persicae. Further, non-synonymous (Ka)/synonymous (Ks) substitutions (Ka/Ks) indicated positive selection for 6 (Ka/Ks > 1) and 122 (Ka/Ks = 0.5–1) single copy orthologous gene pairs between Au. solani and with the pea aphid. Thus, our preliminary draft genome analysis provides new insights of Au. solani to understand molecular basis of aphid biology, host-aphid interactions and adaptation mechanism.
Engineering a novel bilayer membrane for bone defects regeneration
Tiwari, A.P.,Joshi, M.K.,Maharjan, B.,Ko, S.W.,Kim, J.I.,Park, C.H.,Kim, C.S. North-Holland 2016 Materials letters Vol.180 No.-
We report the fabrication of a novel bilayer scaffold as a barrier membrane via modified-solvent casting and evaporation technique for the regeneration of bone defects. The blended solution of polycaprolactone (PCL) and calcium carbonate (CaCO<SUB>3</SUB>) was treated with hydrochloric acid (HCL), which resulted in the in situ formation of carbon dioxide (CO<SUB>2</SUB>) and water. This led to the phase separation between the PCL and calcium-based compounds and subsequently to the formation of a bilayer membrane. Surface morphology, surface wettability, and energy-dispersive X-ray spectroscopy (EDX) analysis confirmed the formation of a bilayered construct with a PCL-rich thin layer on the upper surface and a calcium-rich porous layer on the lower surface. From the FE-SEM images, the PC30 membrane showed a smooth upper layer with pores less than 10@?m diameter, whereas the lower layer contained many interconnected larger pores up to 1000@?m diameter in addition to the visibly identified macrovoids. The cell adhesion assay showed that both surfaces of the membrane responded well to the cells. In addition, the upper surface prevented the down-growth of the fibroblasts. The initial results suggest a new strategy for the fabrication of the bilayer membrane for regenerative medicine.
Fasting Heat Production of Growing Buffalo Calves
Tiwari, C.M.,Chandramoni, Chandramoni,Jadhao, S.B.,Khan, M.Y. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.3
Fasting heat production (FHP) of growing buffalo calves (Bubalus bubalis) in the body weight range of 76 to 236 kg was determined using open circuit respiration chamber. The details of the chambers, calibration of gas analysers and operation of the systems are described. Animals were fasted for 96 hrs during which only water was provided. FHP was determined during next 24 hrs. The mean oxygen consumed, carbon dioxide and methane produced and urinary N excretion per 24 h was $17.03{\ell}$, $11.70{\ell}$, and $0.12{\ell}$ and 0.35 g respectively. The mean respiratory quotient ranged from 0.68 to 0.71, which indicated that post absorptive stage is reached after 96 hrs in growing buffalo calves previously fed ammoniated straw-based ration. Mean FHP of calves was $331.4kJ/kg\;W^{0.75}$. FHP of calves with range of mean body weights of 167 to 235 kg, although nonsignificant but, was almost 12% higher than of calves having mean body weight of 101 kg. Suitable exponent to body weight to describe FHP of buffalo calves was 0.87.