Mathematical Parameters are used in QSAR / QSPR analysis to estimate bioactivity of chemical compounds. Throughout this paper we are discussing the QSPR analysis of certain theocratic graph matrices ...and their corresponding energy. Our analysis reveals some important findings which help define the useful Mathematical Parameter based on their predictive energy.
Abstract
The discovery of moiré superlattices (MSLs) opened an era in the research of ‘twistronics’. Engineering MSLs and realizing unique emergent properties are key challenges. Herein, we ...demonstrate an effective synthetic strategy to fabricate MSLs based on mechanical flexibility of WS
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nanobelts by a facile one-step hydrothermal method. Unlike previous MSLs typically created through stacking monolayers together with complicated method, WS
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MSLs reported here could be obtained directly during synthesis of nanobelts driven by the mechanical instability. Emergent properties are found including superior conductivity, special superaerophobicity and superhydrophilicity, and strongly enhanced electro-catalytic activity when we apply ‘twistronics’ to the field of catalytic hydrogen production. Theoretical calculations show that such excellent catalytic performance could be attributed to a closer to thermoneutral hydrogen adsorption free energy value of twisted bilayers active sites. Our findings provide an exciting opportunity to design advanced WS
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catalysts through moiré superlattice engineering based on mechanical flexibility.
Integrating energy efficiency as a key criterion in production management is critical to increasing energy efficiency while maintaining productivity in manufacturing systems. However, this ...integration still poses a huge challenge for decision-makers due to a lack of knowledge about the linkage between energy efficiency and productivity. Consequently, related energy-saving potential remains unexploited. In this context, this paper presents an innovative Energy Value Mapping (EVM) method to promote the systematic integration of energy efficiency into production management. The method includes three consecutive phases: (i) energy loss modeling to reveal the coupling relation between energy losses and productivity variables; (ii) lean energy analysis using production-oriented energy performance indicators to highlight energy inefficiencies and indicate improvement directions; (iii) improvement strategies determination to improve energy efficiency simultaneously considering traditional production management decisions. Furthermore, an industrial case study of a die-casting plant has demonstrated the effeteness and practicality of the method, showing its great potential in identifying, visualizing, quantifying, analyzing, and decreasing the energy losses related to production and operations management. The results showed that the overall energy demand of the process chain could be reduced by 6.17% with the energy utilization and time utilization being increased by 5.0%, 4.8%, respectively.
•A method for integrating energy efficiency into production management is proposed.•The coupling relation between energy losses and productivity variables is studied.•A set of energy performance indicators is developed to expose energy losses.•The method permits to increase energy efficiency while maintaining productivity.•Overall energy demand was reduced by 6.17% by implementing the proposed method.
Aquatic foods to nourish nations Golden, Christopher D; Koehn, J. Zachary; Shepon, Alon ...
Nature (London),
10/2021, Volume:
598, Issue:
7880
Journal Article
Peer reviewed
Open access
Despite contributing to healthy diets for billions of people, aquatic foods are often undervalued as a nutritional solution because their diversity is often reduced to the protein and energy value of ...a single food type ('seafood' or 'fish').sup.1-4. Here we create a cohesive model that unites terrestrial foods with nearly 3,000 taxa of aquatic foods to understand the future impact of aquatic foods on human nutrition. We project two plausible futures to 2030: a baseline scenario with moderate growth in aquatic animal-source food (AASF) production, and a high-production scenario with a 15-million-tonne increased supply of AASFs over the business-as-usual scenario in 2030, driven largely by investment and innovation in aquaculture production. By comparing changes in AASF consumption between the scenarios, we elucidate geographic and demographic vulnerabilities and estimate health impacts from diet-related causes. Globally, we find that a high-production scenario will decrease AASF prices by 26% and increase their consumption, thereby reducing the consumption of red and processed meats that can lead to diet-related non-communicable diseases.sup.5,6 while also preventing approximately 166 million cases of inadequate micronutrient intake. This finding provides a broad evidentiary basis for policy makers and development stakeholders to capitalize on the potential of aquatic foods to reduce food and nutrition insecurity and tackle malnutrition in all its forms.
Abstract
This study was conducted to investigate the nutritional value of corn sourced from the US and Ukraine (UKR) in the swine diet. A total of 64 nursery pigs initial body weight (BW) = 8.24 ± ...0.73 kg were used in the feeding trial for 28 days and fed one of two diets with sole corn source from US and Ukraine (2 treatments, 8 replicates, 4 pigs/pen) in a randomized complete block design. Pig BW and feed consumption were measured weekly basis to calculate the average daily gain and gain to feed ratio. Seven ileal-cannulated pigs (average BW = 20.3 ± 2.4 kg) were housed in metabolic crates for 3 periods, and the pigs were fed one of three experimental diets (3 treatments, 7 replicates, 1 pig/crate) such as corn starch-based with corn as a sole protein source to determine the ileal digestibility of amino acids by an indicator method. Each period had 5 days of adaptation, followed by 2 days of ileal digesta collection. Eight ileal-cannulated pigs (average BW = 20.0 ± 3.7 kg) were housed in metabolic crates, and the pigs were fed one of two diets with corn as a sole energy source. The pigs had 5 days of adaption, followed by 4 days of fecal and urine collection by using a total collection method for two periods (2 treatments, 8 replicates, 1 pig/crate). Pigs were fed the diets at three times of maintenance energy requirement according to NRC (2012) in two equal meals daily. In the feeding trial, dietary US or UKR corn did not affect the BW, average daily gain, average daily feed intake, and gain to feed ratio in nursery pigs. The standardized ileal digestibility (SID) of Arg for UKR corn was greater (P < 0.05) than US corn, and the SID of His, Phe, Val, Ala, Asp, Cys, and Glu for UKR corn tended to be greater (P < 0.10) than those for US corn. The analyzed gross energy values for US and UKR corns were 3,843 kcal/kg and 3,937 kcal/kg, respectively. The metabolizable energy for UKR corn was greater (P < 0.05) than US corn (3,406 vs. 3,229 kcal/kg). The net energy value for UKR tended to be greater (P < 0.10) than US corn (2,777 vs. 2714 kcal/kg). In conclusion, supplementation of US corn in the nursery diet had no difference in the growth performance of the pigs compared with the UKR corn, whereas the SID value of arginine and metabolizable energy value for US corn were less than those for UKR corn.
Abstract
This study was conducted to identify the nutritional value of corn from US, Brazil (BRZ), and Argentina (ARG). A total of 96 nursery pigs initial body weight (BW) = 8.79 kg were used in the ...feeding trial for 25 days and fed one of three diets with sole corn source (3 treatments, 8 replicates, 4 pigs/pen) in a randomized complete block design. The BW and feed consumption of pigs were measured every week to calculate the average daily gain (ADG) and gain to feed ratio (G:F). Twelve barrows (average BW = 23.7 ± 2.6 kg) housed in metabolic crates were fed one of three experimental diets with corn as a sole energy source to determine the energy value of the corn. The pigs had 7 d of adaption, followed by 4 d of fecal and urine collection with a total collection method for two periods (3 treatments, 8 replicates, 1 pig/crate). Ten ileal-cannulated pigs (average BW = 20 kg) were fed one of four diets, such as corn starch-based diet with different corn sources, and a nitrogen-free diet supplemented with titanium dioxide, in a 4 x 4 Latin Square design (4 treatments, 10 replicates, 1 pig/crate) to determine the ileal digestibility of amino acids by using an indicator method. The ileal-cannulated pigs had 5 days of adaptation, followed by 2 days of ileal digesta collection. Pigs were fed the diets at three times of maintenance energy requirement according to NRC (2012) in two equal meals daily. Pigs fed the US corn diet showed greater (P < 0.05) ADG and G:F for d 0 to 7 than those of pigs fed ARG diet by 13% and 16%, respectively, and tended to have greater (P < 0.10) ADG and G:F for d 0 to 7 than those of pigs fed BRZ corn diet. Pigs fed the US corn diet had greater (P < 0.05) G:F for the overall period (d 0 to 25) than that of pigs fed the BRZ diet by 4% and had a tendency of greater (P < 0.10) G:F for the overall period than that of pigs fed the ARG diet. Dietary corn sources have no significant influence on the standardized ileal digestibility of amino acids and crude protein in pigs. The metabolizable energy values for US, ARG, and BRZ were 3,297 kcal/kg, 3,297 kcal/kg, and 3,240 kcal/kg, respectively. The net energy values for US, ARG, and BRZ were 2,644 kcal/kg, 2,636 kcal/kg, and 2,592 kcal/kg, respectively. However, dietary corn sources had no significant differences in metabolizable energy and net energy values. In conclusion, dietary US corn improved the growth performance of nursery pigs through the improved energy values in pigs compared with the Brazil and Argentina corns.
The development of manganese dioxide as the cathode for aqueous Zn‐ion battery (ZIB) is limited by the rapid capacity fading and material dissolution. Here, a highly reversible aqueous ZIB using ...graphene scroll‐coated α‐MnO2 as the cathode is proposed. The graphene scroll is uniformly coated on the MnO2 nanowire with an average width of 5 nm, which increases the electrical conductivity of the MnO2 nanowire and relieves the dissolution of the cathode material during cycling. An energy density of 406.6 Wh kg−1 (382.2 mA h g−1) at 0.3 A g−1 can be reached, which is the highest specific energy value among all the cathode materials for aqueous Zn‐ion battery so far, and good long‐term cycling stability with 94% capacity retention after 3000 cycles at 3 A g−1 are achieved. Meanwhile, a two‐step intercalation mechanism that Zn ions first insert into the layers and then the tunnels of MnO2 framework is proved by in situ X‐ray diffraction, galvanostatic intermittent titration technique, and X‐ray photoelectron spectroscopy characterizations. The graphene scroll‐coated metallic oxide strategy can also bring intensive interests for other energy storage systems.
Graphene scroll‐coated α‐MnO2 nanowires are studied as the cathode material for an aqueous Zn‐ion battery. The graphene layer increases the electrical conductivity of MnO2 nanowire and relieves the dissolution of the cathode material. An energy density of 406.6 Wh kg−1 can be reached, which is the highest specific energy value among all the cathode materials for aqueous Zn‐ion batteries so far.
•It is emphasized that there should be a higher heating value (HHV) formula for quinoa stalks.•All agricultural waste left in the field after harvest can be converted to energy.•The amount of ...biochemical and thermochemical energy that can be extracted from the quinoa stalks was determined.
This study was carried out to determine the potential of quinoa stalks, left as waste in the fields after harvest, to be converted into roughage for animal feed or as biomass for energy production. The quinoa stalks were harvested from cultivated fields in Şanlıurfa, Turkey, and the biochemical and thermochemical potential conversion of the quinoa stalks to forage feed or biomass was then determined.
A chemical and basic element analysis of the quinoa stalks was carried out. In terms of animal feeding potential that involved the in vitro digestibility and metabolizable energy value. In terms of biomass potential, the syngas values and other gases: estimated methane (CH4), biodegradability, total biogas production value and higher heating value, were also all determined.
According to ADL DM% analysis value (46.49 ± 0.97) and calculated relative feed value (RFV, 71.09) results showed that quinoa stalks have a very poor potential as forage and cannot be regarded as roughage. However, with an energy value of 18.27 MJ/kg was determined that quinoa stalks could be used as an energy producing plant.
In this paper we are discussing the QSPR analysis of certain theocratic graphic matrices and their corresponding energy. Our study reveals some important results that help define the useful ...mathematical parameter based on their power of predicting. Our analysis shows some significant findings that aid in characterizing the valuable Mathematical Parameter based on their predictive energy.
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