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2021 ◽  
Author(s):  
Maciej Siedlecki ◽  
Jerzy Merkisz ◽  
Michał Dobrzyński ◽  
Kamil Kubiak

The use of comfort systems, the number of which in vehicles is constantly increasing, has a direct impact on fuel consumption and engine load. As part of the article, the vehicle's drive in real operating conditions was analyzed in terms of the emission of toxic compounds. The tests were carried out without and with the systems turned on, using the PEMS apparatus, where road emissions of carbon dioxide, carbon monoxide, hydrocarbons, nitrogen oxides and solid particles were measured in terms of mass, number and size distribution of diameters. The track was driven four times with different setting of the powertrain of examined car.


2021 ◽  
pp. 1-8
Author(s):  
Christopher O. Oriakhi

Atomic Structure and Isotopes covers the fundamentals of the atomic theory of matter. Dalton’s atomic theory is summarized along with the laws derived from it. The basic structure of the atom is reviewed with emphasis on calculations involving atomic number and mass number. The concepts of isotopes and relative atomic masses are presented from a quantitative viewpoint.


2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Alpna Ojha ◽  
Sunita Gupta ◽  
Unnati Gupta ◽  
Pushpendra P. Singh ◽  
Abhishek Yadav ◽  
...  

2021 ◽  
Vol 12 ◽  
pp. 61
Author(s):  
S. E. Massen

Shannon's information entropies in position- and momentum-space and their sum $S$ are calculated for various $s$-$p$ and $s$-$d$ shell nuclei using a correlated one-body density matrix depending on the harmonic oscillator size $b_0$ and the short range correlation parameter $y$ which originates from a Jastrow correlation function. It is found that the information entropy sum for a nucleus depends only on the correlation parameter $y$ through the simple relation $S= s_{0A} + s_{1A} y^{-\lambda_{sA}}$, where $s_{0A}$, $s_{1A}$ and $\lambda_{sA}$ depend on the mass number $A$. Finally, we propose a method to determine the correlation parameter from the above property of $S$ as well as the linear dependence of $S$ on the logarithm of the number of nucleons.


Author(s):  
Shareen Forbes ◽  
Anneliese J. Flatt ◽  
Denise Bennett ◽  
Robert Crookston ◽  
Mirka Pimkova ◽  
...  

2021 ◽  
Author(s):  
sharew mekonnen Haile ◽  
Tigist Wondala ◽  
Mesobework kassa

Abstract The objective of this study was to evaluate failure of oestrus synchronization and mass insemination in the conception of dairy cattle in Silte zone. To evaluate the mechanism of the failure of OSMI conception rate we have collected (HF, jersey, and HF×Boran breed semen) from the three districts and evaluated their quality in NAGII laboratory thereafter bought 1000 qualified HF semen straw and distributed in the 3 districts. 150 cows were brought by farmers for services, and from those cows 130 cows were fulfil the precondition for this program and injected them with 2 ml of PGF2 alpha hormone. Among the 130 injected cows, 72 (55.38%) of them were responded from day 2 up to day 3 after hormone treated and then inseminated them. The lower percentages of conception rate which was observed in this study were associated with low number of AIT and mass number of cows provided during OSMI program, lack of awareness about heat detection, lack of inseminator equipment and cows did not properly managed after hormone and semen administered as we evaluated. As a result, the quality of semen in Dalocha and Sankura districts was facing with quality problem. We have checked the AITs efficiency through placing six cow per AIT thereafter they inseminated them. As a result, there was no AIT efficiency difference on conception rate based on their working experience in this study. Generally, there is a great need of skilled and experienced technician and capacity building of farmers in heat detection, husbandry practices, and good handling practice of semen in the office and improvement strategy. Therefore, improvement in facilities and management should be necessary before implementing an effective estrous synchronization and mass artificial insemination programs.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sulagna Das

Purpose This paper aims to find out the performance of the Grameen Banks of West Bengal after their merger. Design/methodology/approach The objective of the paper is to measure the performance of Paschim Banga Gramin Bank (PBGB) and Bangiya Gramin Vikash Bank (BGVB) after their amalgamation, to compare the performance of PBGB and BGVB, using the key performance indicators and to analyze the future scope of these two banks. The factors that are considered for this study are number of branches (if these banks could reach maximum of the rural mass), number of staffs (if these banks generated employment after the merger), investments, deposits, composition of total funds (owned funds and borrowed funds), lending services, productivity per branch and per staff, etc. The study uses statistical tools to analyze the data. Findings It has been observed that there exists a significant difference in the “Branch Network” of PBGB and BGVB. A significant difference has been observed in the “Number of Staffs” of PBGB and BGVB. It has been found that there is a significant difference in the “three type of funds” of PBGB and BGVB. It has been found that there is a significant difference in the “Investments” of PBGB and BGVB. A significant difference has been observed in the “Deposits” of PBGB and BGVB. It has been found that there is a significant difference in the “Outstanding Loan” amount of PBGB and BGVB. It has been observed that there is a significant difference in the “Loan Issued” amount of PBGB and BGVB. It has been found that there is no significant difference in the Productivity “Per Branch” and “Per Employee” of PBGB and BGVB. Research limitations/implications The study is based on the published/secondary data and is restricted to two Regional Rural Banks of West Bengal, the PBGB and the BGVB, for nine years, 2012–2020. Social implications The paper will help the future researchers, to know the performance of the Grameen Banks for the study period; this will help them to carry on with the study in the future. Originality/value The work is original and never sent to anywhere else for publication.


2021 ◽  
Vol 84 (4) ◽  
pp. 475-482
Author(s):  
A. G. Afonin ◽  
M. Yu. Bogolyubsky ◽  
A. A. Volkov ◽  
D. K. Elumakhov ◽  
V. N. Zapolsky ◽  
...  

2021 ◽  
Vol 19 (4) ◽  
pp. 15-19
Author(s):  
Sameera Ahmed Ebrahiem ◽  
Taghreed A. Younis

In the beta decay process, a neutron converts into a proton, or vice versa, so the atom in this process changes to a more stable isobar. Bethe-Weizsäcker used a quasi-experimental formula in the present study to find the most stable isobar for isobaric groups of mass nuclides (A=165-175). In a group of isobars, there are two methods of calculating the most stable isobar. The most stable isobar represents the lowest parabola value by calculating the binding energy value (B.E) for each nuclide in this family, and then drawing these binding energy values as a function of the atomic number (Z) in order to obtain the mass parabolas, the second method is by calculating the atomic number value of the most stable isobar (ZA). The results show that the mass parabolas of isobar elements with an even mass number (A=even) vary from the mass parabolas of isobar elements with an odd mass number (A=odd), In the case of single isobars, it has one parabola, meaning that it has one stable isobar, while we find that the pairs isobars appear to have two parabolas, meaning that it has more than one stable isobar. When we compared the two methods used in this study to determine the most stable isobars, we found that in two techniques for odd isobars, stable isobars are mostly the same nuclide, whereas in suitcases of even isobars with two stable isobars (only one of them are same stable isobars).


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