Journal of Applied Physical Science International最新文献_第3页

EVALUATION OF TEACHING AND LEARNING OF PHYSICS IN SENIOR SECONDARY SCHOOLS IN ANKPA LOCAL GOVERNMENT AREA OF KOGI SATE, NIGERIA 对尼日利亚科吉省ankpa地方政府辖区高中物理教学的评估

Journal of Applied Physical Science International Pub Date : 2022-12-14 DOI: 10.56557/japsi/2022/v14i27968

Alfa Arome Paul, Unuagah Bosede Omolayo, C. Eucharia

引用次数: 0

IMPACT OF ACTIVATION ON CO-PYROLYZED MANGO (Magnifera indica) AND SOURSOP (Annona muricata) SEEDS BIOCHAR 活化对共热解芒果(Magnifera indica)和番荔枝(Annona muricata)种子生物炭的影响

Journal of Applied Physical Science International Pub Date : 2022-12-14 DOI: 10.56557/japsi/2022/v14i27969

O. Joshua, U. I. Esther, I. H. Ifijen, Lewis DORGAN-FORMOSO, Richard Singer, J. Bear, Grace Broadberry

{"title":"IMPACT OF ACTIVATION ON CO-PYROLYZED MANGO (Magnifera indica) AND SOURSOP (Annona muricata) SEEDS BIOCHAR","authors":"O. Joshua, U. I. Esther, I. H. Ifijen, Lewis DORGAN-FORMOSO, Richard Singer, J. Bear, Grace Broadberry","doi":"10.56557/japsi/2022/v14i27969","DOIUrl":"https://doi.org/10.56557/japsi/2022/v14i27969","url":null,"abstract":"Co-pyrolysis of Annona muricata and Magnifera indica resulted in the production of biochar at temperatures of 350, 400, 500oC, heating rate of 5 oCmin-1, and residence times (tr) of 45 min and 2 h. Co-pyrolyzed biochar was then physically and chemically activated at 850°C for 75 min using CO2 and KOH, respectively. The Brunauer-Emmett-Teller (BET) method was used to calculate the specific surface area of the biochar using nitrogen adsorption at 77 K (as,BET). The functional groups present were determined using FTIR spectroscopy. The BET values for the physically and chemically activated biochar were respectively 18.30 m2g-1 and 574.63 m2g-1 for high tr of 2 h and 228.20 m2g-1 and 810.55 m2g-1 for low tr of 45 min. The porous biochar had peaks corresponding to N-H/O-H, C=O, C-O, and C=C bonds. The intensity of the biochar peak was shown to be negatively correlated with the pyrolysis temperature. All samples had high as,BET at low tr. When compared to chemical activation, physical activation was found to significantly enhance the biochar's surface area, increasing its potential for industrial usage.","PeriodicalId":322062,"journal":{"name":"Journal of Applied Physical Science International","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129287611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALYSIS OF AIR-BORNE POLLUTANTS DURING SECOND WAVE OF COVID-19 PANDEMIC OVER MAJOR CITIES OF INDIA 印度主要城市第二波COVID-19大流行期间空气污染物分析

Journal of Applied Physical Science International Pub Date : 2022-11-14 DOI: 10.56557/japsi/2022/v14i17928

Adarsh Kumar

{"title":"ANALYSIS OF AIR-BORNE POLLUTANTS DURING SECOND WAVE OF COVID-19 PANDEMIC OVER MAJOR CITIES OF INDIA","authors":"Adarsh Kumar","doi":"10.56557/japsi/2022/v14i17928","DOIUrl":"https://doi.org/10.56557/japsi/2022/v14i17928","url":null,"abstract":"In this paper, we analyzed air-borne pollutants like PM2.5, PM10, NO2, SO2, CO and Ozone obtained from twelve air-quality monitoring stations operated by various central and state-pollution control agencies in different parts of India during second wave (March to May’ 2021) of Covid-19 pandemic. Our results show positive correlations between Covid-19 cases and PM2.5/10 over Delhi (+0.049) and Lucknow (+0.097) of Northern India. Lowest PM2.5 concentrations was observed over Chennai (~19), which was due to lockdown restrictions imposed by Tamilnadu state government. Pearson coefficients of PM2.5, PM10 and NO2 were observed to be negative for all the three chosen major cities of Southern India, and thereby, indicating that corona pandemic was not affected by air-borne particulates over Southern India. The average PM10 density of Eastern India was estimated to be maximum at Varanasi (~161) and lowest at Kolkatta (~85), however Pearson coefficient, P was fond to be negative for Kolkatta (-0.72). Further, over Western India, pearson coefficients of PM2.5, PM10, NO2, SO2 and CO were estimated to be negative for all the three chosen major cities. Ozone was found to have its positive trends at Ahmedabad (+0.32) and negative trends for both Jaipur (-0.044) and Mumbai (-0.017). Student t-test was also applied to test the significance between two independent data sets.","PeriodicalId":322062,"journal":{"name":"Journal of Applied Physical Science International","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123975748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DISTRIBUTION OF PRESSURE IN FIVE GENERAL COSMIC MODELS 五种一般宇宙模型的压力分布

Journal of Applied Physical Science International Pub Date : 2022-09-02 DOI: 10.56557/japsi/2022/v14i17838

Fadel A. Bukhari

{"title":"DISTRIBUTION OF PRESSURE IN FIVE GENERAL COSMIC MODELS","authors":"Fadel A. Bukhari","doi":"10.56557/japsi/2022/v14i17838","DOIUrl":"https://doi.org/10.56557/japsi/2022/v14i17838","url":null,"abstract":"The distributions of radiation pressure and the total pressure of the universe were investigated in the general cosmic models in three time intervals. In the cosmic epoch t (le) trm , logarithm of both radiation pressure and the total pressure descend gradually linearly with log (t). However, in the epoch t = tdec - tv , log(Pr(t)) decreases steeply up to t=6.2104 Myr, then it declines gradually until t=205.9406 Myr, hence it reduces slowly, whereas log(P(t)) decreases fast up to t=5.9406 Myr, afterwards it descends gradually until t = 112.8713 Myr, where it starts declining slowly. Nevertheless, in the time range t=tv - 50 Gyr , log(P(t)) reduces fast up to t=1.4458 Gyr, then it descends in relatively less rate, while P(t) falls sharply until t=0.7229 Gyr, hence it declines rapidly up to tapp = 1.9277 Gyr, where P(t) approaches the dark energy pressure P(Lambda) . As P(t) decreases with cosmic time the horizon expansion speed of the universe dh (t) descends continuously, while the negative values of the horizon expansion acceleration of the universe dh (t) increase. On the other hand, the horizon volume speed of the universe expansion Vh (t) ascends with decreasing P(t) , whereas the horizon volume acceleration of the universe expansion Vh (t) descends. Slightly after t = tapp , Vh (t) increases to its maximum value at t=tmax, then it starts falling steeply with dh (t) towards zero. However, at t=tmax dh (t) surges prominently towards zero, whereas Vh (t) fluctuates about this value. The drastic changes in dh (t) , dh (t) , Vh (t) and Vh (t) following the outstanding decrease in P(t) at t=tapp exhibits strong dependence of the cosmic dynamics on the total pressure of the universe.","PeriodicalId":322062,"journal":{"name":"Journal of Applied Physical Science International","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132473549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE NIRMALA’S MINIMUM DOMINATING ENERGY OF A GRAPH 图的nirmala最小支配能

Journal of Applied Physical Science International Pub Date : 2022-07-09 DOI: 10.56557/japsi/2022/v14i17759

B. K. Divyashree, R. Jagadeesh, .. Siddabasappa

引用次数: 0

Quantum Controller of Gravitational Mass Using Photon Gas 利用光子气体的引力质量量子控制器

Journal of Applied Physical Science International Pub Date : 2022-03-22 DOI: 10.56557/japsi/2022/v14i17512

F. Aquino

引用次数: 0

SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF 3-BROMOBENZALDEHYDE NICOTINIC ACID HYDRAZONE AND IT’S Co(II), Cu(II), Mn(II) AND Ni(II) COMPLEXES 3-溴苯甲醛烟酸腙及其Co(II)、Cu(II)、Mn(II)和Ni(II)配合物的合成、表征和抗菌研究

Journal of Applied Physical Science International Pub Date : 2022-01-05 DOI: 10.56557/japsi/2022/v14i17456

A. S. Ojo, S. Mamman, P. Ukoha

{"title":"SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF 3-BROMOBENZALDEHYDE NICOTINIC ACID HYDRAZONE AND IT’S Co(II), Cu(II), Mn(II) AND Ni(II) COMPLEXES","authors":"A. S. Ojo, S. Mamman, P. Ukoha","doi":"10.56557/japsi/2022/v14i17456","DOIUrl":"https://doi.org/10.56557/japsi/2022/v14i17456","url":null,"abstract":"Acyl hydarazones and other hydrazones derivatives are of immense biological importance as a result of their antibacterial, antifungal, antiinflammatory properties and coordination Chemistry. The ligand was prepared by refluxing nicotinic acid hydrazide and 3-bromobenzaldehyde in ethanol, the complexes were synthezed by mixing ethanolic solutions of the metal salts with the hydrazone. The ligand and complexes were characterized on the basis of uv-visible, FTIR, melting point, conductivity, magnetic susceptibility, metal analysis and mole ratio, antimicrobial activities were determined. The ligand and complexes formed are high melting point crystalline solids. Thermodynamic stability study showed that the complexes are stable with stability constants between 2.84 x 105 – 2.21 x 107 while the solution studies gave 1:2 metal to ligand ratio. Infrared spectra data are diagnostic of bidentate coordination of the ligand via carbonyl oxygen and azomethine nitrogen atoms as result of the negative shift in the (C=O) and (C=N) bands. Effective magnetic moment of the complexes is 5.62 B.M, 4.02 B.M. and 1.81 B.M. for Manganese, Cobalt and Copper complexes respectively, the nickel complex is diamagnetic. Electronic spectra of the ligand indicate n * transitions, transition in the manganese complex is spin and orbital forbidden with very low molar absorptivity, nickel complex gave two bands assigned to 3A2g(F) 3T1g(F) and 3A2g(F) 3T1g(P) transition, cobalt complex gave one electronic band assigned to 4T1g(F) 4A2g transition. Copper complex gave one band, assigned to 2Eg 2T2g transition. On the basis of magnetic and electronic spectral of the isolated complexes octahedral geometry has been proposed for the Mn(II), Co(II) and Cu(II) complexes and square planar for the Ni(II) complex. The activities of the complexes against most of the microorganisms were enhanced compared to those of their parent ligand, with some promising potential when compared to the control drugs.","PeriodicalId":322062,"journal":{"name":"Journal of Applied Physical Science International","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134279084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0