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... Repeat breeding, which is non-pregnancy following three or more breeding attempts, is a serious reproductive disorder in cattle. In the present study, metabolomic profiling was used to identify metabolites in the blood plasma of repeat breeder cows (RBCs) and non-RBCs. Metabolomic analysis showed that acetoacetate (AcAc), a ketone body, was detected in RBCs, but not in non-RBCs. In contrast, β-hyd ...
algorithms; energy; hydrologic cycle; prediction; time series analysis; wind; wind power; California; Spain; Wyoming
Abstract:
... In this paper, an efficient new hybrid time series forecasting model combining variational mode decomposition (VMD) and Deep learning mixed Kernel ELM (MKELM) Autoencoder (AE) has been presented for precise prediction of wind power. It is well known that KELM-AE avoids manual tuning of weights of hidden layer nodes, and exhibits superb model generalization property, reduces execution time, and pro ...
aerodynamics; energy; mass flow; neural networks; normal distribution; prediction; regression analysis; system optimization
Abstract:
... End wall contraction is an effective approach to reduce the substantial secondary loss in the cascade with low aspect ratio. This paper proposed a series convolutional neural network architecture (SCNN) to improve the design optimization problem of end wall profile of a turbine stator blade. The specific implementation of the architecture is discussed in detail. The effect of the train size and se ...
... In this present study, an amperometric immunosensor was developed based on disposable screen-printed carbon electrode (SPCE) for specific and sensitive detection of SARS-CoV-2 S1 protein. Anti-SARS-CoV-2 S1 monoclonal antibody was firstly immobilized onto the electrode surface. Then, the sandwich complex was formed by addition of S1 protein, secondary antibody and HRP-IgG, respectively. Chronoampe ...
algorithms; corn; cost effectiveness; electricity; energy efficiency; farms; flocks; neural networks; production costs; questionnaires; soybeans; topology; Pakistan
Abstract:
... The current study estimates target values of energy inputs along with an assessment of energy- and cost-saving strategies for poultry farms. In 2019, cross-sectional data were collected from 192 farmers at environmentally controlled poultry farms in Pakistan. A well-structured questionnaire was used to conduct face-to-face interviews with respondents. The results reveal that 1 MJ energy input at p ...
... Five newly synthetized fac-Re(I) tricarbonyl compounds were explored as prospective antitrypanosomal agents. The biological activity of the whole series was evaluated preliminarily against the epimastigote form of Trypanosoma cruzi. All compounds showed activity against epimastigotes with IC₅₀ values in the low micromolar range. The most active compound [fac-Re(I)(CO)₃(tmp)(CTZ)](PF₆), with CTZ = ...
capital; clean energy; cobalt; energy; energy industry; gold; silver; uncertainty
Abstract:
... This paper examines the relationship between clean energy stock indices and energy metals that are sensitive to the growth in demand for clean energy solutions, and makes inferences about whether energy metals can act as hedges or safe havens for clean energy stock indices. The sample period is April 2011 to April 2021, a period which saw substantial investments into the clean energy industry as t ...
... High-resolution wind power assessments, validated with ground data, are key for wind energy projects in regions of promising potential such as the Colombian Caribbean. This study assesses the annual wind power for this region at convection-permitting resolution, using the Weather Research and Forecasting (WRF) model with two nested domains (9 km and 3 km) and 50 vertical levels with 15 min outputs ...
... The present study aimed to evaluate the cell-mediated and the humoral immune response to Romanian sheep pox vaccine in pregnant cows (n = 12) vaccinated at different times of gestation period and the duration of maternal immunity in calves born to these cows. Evaluation of cellular immunity revealed an increase in lymphocytic proliferation that peaked at 10th day post vaccination (dpv) then gradua ...
air; anxiety; batteries; electric vehicles; energy; heat pumps; lithium; nonlinear models; prediction; temperature
Abstract:
... Electric vehicles running at low temperature causes range anxiety and safety hazards because of the reduction of available battery capacity and battery degradation caused by lithium plating. An optimization strategy for low temperature heating of intelligent-connected electric vehicle battery pack is proposed in this paper. Based on the Bernardi's theory, a control-oriented model of the battery pa ...
... It has been demonstrated that some conventional microplastics (CMPs) have toxicities to organisms, however, whether biodegradable microplastics (BMPs) have similar potential risks to marine ecosystems remains to be elucidated. Therefore, this study aimed to investigate i) the effects of CMPs (i. e., micro-sized polyethylene (mPE) and polyamide (mPA)) on marine algae Chlorella vulgaris; and ii) the ...
... Silibinin (SIL) is a neuroprotective and amyloid aggregate inhibitor that showed therapeutic applications in preclinical studies of Alzheimer’s disease (AD). Due to poor aqueous solubility free SIL is unable to reach the brain after oral administration. Therefore SIL was encapsulated in nano-liquid crystals (NLCs) to increase payload in brain using glyceryl monooleate (GMO). The NLCs were prepared ...
convection; heat transfer coefficient; latent heat; liquids; momentum; particle image velocimetry; solidification; thermal energy
Abstract:
... In this paper, the use of bubble-driven flow on phase change material (PCM) is proposed to improve the discharge performance of a latent heat thermal energy storage system (LHTES). The upward momentum of bubbles due to its density difference can agitate liquid PCM and increase the flow velocity of liquid PCM to enhance heat transfer between the heat transfer fluid (HTF) and the PCM. To analyze the ...
... This research paper presents a CFD analysis of small scale ORC scroll expanders using variable and constant wall thicknesses by providing back-to-back aerodynamic performance comparisons. The evaluation of the three-dimensional and transient CFD results shows that the shorter scroll profile length of the variable wall thickness design (VWD) generated lower average radial and axial gas forces. In a ...
Russia; carbon; case studies; climate change; cold; energy; heat; temperature
Abstract:
... Vulnerability of the cogeneration technologies towards the climate change is addressed. Climate and energy modeling approaches were combined to simulate operation of a modern binary-cycle combined heat and power (CHP) plant across Russia. It has been shown that a heating loads decrease combined with an increase of the extreme cold temperatures is determining a crucial vulnerability mechanism for C ...
... In this work, the effects of preparation methods of Fe–Co–K catalysts on biomass pyrolysis were studied in a fixed bed reactor under 0.1 MPa N₂ and 700 °C. The results showed that Fe–Co bimetallic catalyst has better activity than Fe. the yields of H₂ and CO increased from 84.90 ml/g and 63.94 ml/g (Fe) to 98.42 ml/g and 85.43 ml/g (Fe + Co) prepared by co-impregnation, respectively, and the CO₂ y ...
activated carbon; energy; graphene; liquids; oils; polypropylenes; pyrolysis; synergism; temperature
Abstract:
... The preparation of high-value fuels and carbon nanomaterials (CNMs) by co-pyrolysis of Chinese herb residue (CHR) and polypropylene (PP) is conducive to the improvement of environment and energy problems. The effect of monometallic (Ni, Fe, Co, Cu) and bimetallic (Ni/Fe, Ni/Co, Ni/Cu) loaded on activated carbon (AC) catalysts on the pyrolysis products was investigated in a two-stage fixed bed. The ...
economic dispatch; energy; heat; models; natural gas
Abstract:
... Combined heat and power dynamic economic dispatch (CHPDED) is one of the key technologies for the efficient operation of natural gas combined cycle (NGCC) plants in integrated energy systems. In this study, based on the actual operational characteristics of NGCC plants at combined heat and power mode, a plant advanced loads variation capacity model is developed. The advanced loads variation capaci ...
... This work investigated on the effect of co-hydrothermal carbonization (co-HTC) of polyvinyl chloride (PVC) and alkali coal on combustion and slagging characteristics of the generated fuels (hydrochar). Fuel properties were assessed in terms of ultimate and proximate analysis, functional groups evolution, and ash melting characteristics. The loss of C–O functional groups in coal would be accompanie ...
... In lieu of the fact that modern-day research is saddled with the responsibility of replacing/supplementing fossil fuels with biodiesel for use in diesel engines, the challenge still remains the need to improve the properties of biofuels towards stimulating high engine compatibility and performance. Despite the advances made in improving biofuels such as those sourced from Juliflora with additives, ...