mjl@ jm`@ krkwk ldrst l`lmy@最新文献_第4页

A review of Peak to Average Power Ratio Reduction Schemes in OFDM Systems OFDM系统中峰值平均功率比降低方案综述

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2022-03-31 DOI: 10.32894/kujss.2022.173410

Bana Hassan Shekh Faraj, A. Siddiq

引用次数: 3

Effect of Pomegranate Peel Extract on the Production of Some Enzymes in Proteus spp Isolated from Different Clinical Samples in Kirkuk city. 石榴皮提取物对基尔库克市不同临床样品中变形杆菌部分酶生成的影响。

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-12-11 DOI: 10.32894/kujss.2021.169993

Salah Zain Alabdeen, B. Ahmed

{"title":"Effect of Pomegranate Peel Extract on the Production of Some Enzymes in Proteus spp Isolated from Different Clinical Samples in Kirkuk city.","authors":"Salah Zain Alabdeen, B. Ahmed","doi":"10.32894/kujss.2021.169993","DOIUrl":"https://doi.org/10.32894/kujss.2021.169993","url":null,"abstract":"DOI:http://dx.doi. org/10.32894/kujss. 2021.169993 Abstract The study investigates the effects of pomegranate peel extracts on some virulence factors such as the production of some enzymes produced by Proteus spp isolated from different clinical samples. Among 310 different clinical samples, 48 isolates of proteus were obtained, 14 isolates(29.16%)were obtained from urine, 15 isolates (31.25%) were obtained from stool, 7 isolates (14.58%) from ear swabs, 4 isolates (8.33%) were obtained from wounds, 5 isolates (10.41% (from burns and 3 isolates) 6.25%) of the high cervical. The study showed that from 48 isolates of Proteus spp 25 isolates (52.08%) identified as P.mirabilis, 15 isolates (31.25%)of P. penerri, while 8 isolates of P. vulgaris were obtained with a percentage of (16.66%) and it was found that 18 isolates (72%) of P.mirabilis isolates were positive for the production of beta-lactamase enzyme, 24 isolates (96%) are positive for proteases and 14 isolates (56%) produced lipase, while 13 isolates from P. penerri (86.66%) produced beta-lactamases and proteases and 10 isolates (66.66%) produced lipase, also found that 5 isolates (62.5%) of P. vulgaris produced Beta-lactamase and all the isolates (100%) produced protease while 7 isolates (87.5%) produced lipase. It was found that the hot aqueous extract of pomegranate peels inhibited the production of beta-lactamase enzyme in 4 out of 7 isolates that produced this enzyme, while all tested isolates did not produce lipase by using extracts of pomegranate peel extracts. The isolates lost their ability to produce protease enzyme, except for two isolates that were not affected by extracts of pomegranate peel fruits.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45184831","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: 3

Maximum Track length Approach for Estimation of Bulk Etch Rate of CR-39 Detector by Means of Track Diameter-Length Correlation 利用径长相关性估计CR-39探测器整体刻蚀速率的最大径长法

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-09-30 DOI: 10.32894/kujss.2021.169997

Shaukat Saeed, Abrar Mustafa

{"title":"Maximum Track length Approach for Estimation of Bulk Etch Rate of CR-39 Detector by Means of Track Diameter-Length Correlation","authors":"Shaukat Saeed, Abrar Mustafa","doi":"10.32894/kujss.2021.169997","DOIUrl":"https://doi.org/10.32894/kujss.2021.169997","url":null,"abstract":"DOI:http://dx.doi. org/10.32894/kujss. 2021.169997 Abstract In this paper, we use maximum track length (Lmax) approach depending on track diameter-length (D-L) correlation as another way to estimate Vb directly from empirical measurements of the track diameters or lengths without resorting to other methods. The lengths of the tracks have been extracted using the (D-L) correlation which relied on the measurement of the openings diameter of the etched tracks, in addition to using the Track-Test program. 241Am(1μCi) source was used to irradiate the plastic detector CR-39 with alpha particles of energies of 3.5-5.3 MeV by means of normal incidence.The irradiated detectors were treated by a chemical etchant for distinct intervals of time using an aqueous NaOH solution of 6 N preserved at temperature (70±)oC. An empirical formula was applied to calculate Vb. The formula relies on two parameters, the maximum length of the track (Lmax) and its saturation time (tsat). We have seen that the magnitude of Vb is equal to 1.407 (μm/h), which can be regarded as compatible with the values indicated by others using different methods. It has been noticed that the maximum length of the etched tracks is directly proportional to alpha energy while exponentially to saturation time of the length.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48335285","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 Effect of Sunspots Number on Critical frequencies foF2 For the Ionospheric Layer-F2 Over Kirkuk City During the Ascending Phase of Solar Cycle 24 太阳黑子数对24太阳周期上升期基尔库克市上空F2电离层临界频率的影响

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-09-30 DOI: 10.32894/kujss.2021.170001

E. Bakr, W. Zaki, Jawdet Mohammed

{"title":"The Effect of Sunspots Number on Critical frequencies foF2 For the Ionospheric Layer-F2 Over Kirkuk City During the Ascending Phase of Solar Cycle 24","authors":"E. Bakr, W. Zaki, Jawdet Mohammed","doi":"10.32894/kujss.2021.170001","DOIUrl":"https://doi.org/10.32894/kujss.2021.170001","url":null,"abstract":"DOI:http://dx.doi. org/10.32894/kujss. 2021.170001 Abstract The study of the F2-layer properties and the critical frequency( foF2) is necessary to understand the dynamic features and thus more accurately predict the behavior of the F layer,and this research aims to find the relationship (correlation) and interdependence between the critical frequency ( foF2) of Ionospheric layer F2 and Sunspot number. In this study the characteristics and behavior of oF2 layer during Solar cycle 24 were studied, the effect of Sunspots number (Ri) on the critical frequency ( foF2),were investigated for the years (2012, 2013, 2014) which represents the ascending phase and 2014 represent the peak phase of the solar cycle 24 over Kirkuk city (35° N, 44° E) by finding the critical frequency ( foF2) values, the layer’s impression times are determined for the days of solstice as well as equinox,where the solar activity was examined for the days of the winter and summer solstice and the days of the spring and autumn equinoxes for a period of 24 hours by applied the International Reference Ionosphere model IRI (2016). The output data for foF2 were verified by using the IRI-NeQuick option by specifying the time, date and Sunspot number parameters. Statistical analysis was carried out through the application of the Minitab (version 2018) in order to find the correlation between the critical frequency ( foF2) of Ionospheric layer F2 and Sunspot number. It was concluded that the correlation is strong and positive, this indicate that critical frequency ( foF2) increase with increasing Sunspots number (Ri) for solar cycle 24.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44475412","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: 2

Review: Influence of Radiation on Female Fertility and Pregnancy 综述：辐射对女性生育和妊娠的影响

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-06-01 DOI: 10.32894/kujss.2021.168660

S. Amin, K. Faraj

{"title":"Review: Influence of Radiation on Female Fertility and Pregnancy","authors":"S. Amin, K. Faraj","doi":"10.32894/kujss.2021.168660","DOIUrl":"https://doi.org/10.32894/kujss.2021.168660","url":null,"abstract":"Radiations made up of non-ionizing and ionizing radiations, this classification is based on the ionizing power and the energy of radiations. In developed and developing communities, people are continually exposed to radiations which are generated from variety sources that are naturally occurring or producing by human. The purpose of this study is to review accessible information on the influence of radiation on female fertility and to discuss the options for fertility preservation. Radiation exposure can result in impairment of tissue integrity and sometimes, leading to organs dysfunction, the impact of radiations on organs depends on site of irradiation, patient age and total radiation dose. Female patients who are treated with radiation have an increased rate of uterine dysfunction, ovaries dysfunction, impaired fertility, incidence of pregnancy complications, premature birth and miscarriage. Pre-pubertal uterus is more vulnerable to the effect of radiation, compared with the pubertal uterus due to arising ovarian estrogen production and uterus enlarges. To reduce the effects of radiations on female reproductive organ, fertility preservation procedures such as ovarian transposition, reproductive gland protection and oocyte cryopreservation should be carried out before and/or during radiotherapy.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45660519","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: 1

Synthesis and Characterization of Some Copper (II) Complexes with New Schiff Bases Ligands 新型席夫碱铜(II)配合物的合成与表征

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-03-30 DOI: 10.32894/KUJSS.2021.167893

marwa al-mafrgy, Hassan Mohammed, H. AlZahwi

引用次数: 0

Characteristics of Energy States and their Calculation Using IBM-1 and IVBM of Isotones 180HF, 182W, 184Os, 186Pt 180HF、182W、184Os、186Pt同位素的能态特征及其IBM-1和IVBM计算

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-03-30 DOI: 10.32894/KUJSS.2021.167894

Mohammed Ali Ahmed Alnejm

引用次数: 0

Computational Study of the Effect of Adsorbed Lithium on Solid State Hydrogen Storage Capacity of Pristine and Boron Doped Graphene 吸附锂对原始和掺硼石墨烯固态储氢容量影响的计算研究

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-01-02 DOI: 10.32894/kujss.2021.167516

I. Hassan, Sufian mohammed mohammed Alezzi

{"title":"Computational Study of the Effect of Adsorbed Lithium on Solid State Hydrogen Storage Capacity of Pristine and Boron Doped Graphene","authors":"I. Hassan, Sufian mohammed mohammed Alezzi","doi":"10.32894/kujss.2021.167516","DOIUrl":"https://doi.org/10.32894/kujss.2021.167516","url":null,"abstract":"Hydrogen is considered one of the most promising source of clean and renewable energy as an alternative for environment polluting fossil fuel resources. The safe and reasonable volumetric density storage represent the main problem facing the hydrogen technology. Most of the research nowadays are focusing on development of new technologies for solid state storage of hydrogen. At the present study, the adsorption of hydrogen molecule (H2) has been studied on the supercell (3 x 3 x 1) of pure graphene and doped graphene with boron atom and adsorbed with lithium atom by first principle calculations with DFT method. We choice local density approximation (LDA) To describe the exchange-correlation energy between the interacting electrons and the basis set (Double Numerical Plus polarization DNP), the regions of a Brillion zone are set to (2 x 2 x 1). The binding energy of hydrogen molecules adsorbed on the surface of graphene adsorbed by the lithium atom was between (0.2-0.4 eV) and with a storage ratio (6.74 wt.%), Which meets the gravitational capacity standard specified by the energy department, And the binding energy of hydrogen molecules adsorbed on the surface of graphene adsorbed by the lithium atom and doped with the boron atom was between (0.230.32 eV) and with a storage ratio (6.67 wt.%), Thus meeting the standard for the final mass Kirkuk University Journal /Scientific Studies (KUJSS) Volume 15, Issue 4, December 2020 , pp. (19-41) ISSN: 1992-0849 (Print), 2616-6801 (Online) Web Site: www.uokirkuk.edu.iq/kujss E-mail: kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 21 capacity (6.5 wt.%) Specified by the Department of Energy. We conclude that the doping of the boron atom into one of the six graphene rings in the large unit cell (3 × 3 × 1) played a major role in increasing the stability of the graphene surface and reduce the binding energy that contributes to reducing the temperature of the hydrogen desorption process.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48063717","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

Synthesis and Characterization of Some New Azo-Schiff Bases as Energy Rich Candidate Compounds Derived from 1, 5-Diaminoanthraquinone by Fusion Method 以1,5 -二氨基蒽醌为原料的新型富能偶氮席夫碱的合成及表征

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2021-01-01 DOI: 10.32894/kujss.2021.168662

Nashwan O. Tapabashi, N. Taha, Marwa N. El-Subeyhi

引用次数: 0

The Effect of Addition of (Al2O3) Nano Particles on Structural and Electrical Properties of Bi2Ba2Ca2Cu3O10" +δ" Superconductors at High Temperature (Al2O3)纳米粒子的加入对Bi2Ba2Ca2Cu3O10“+δ”超导体高温结构和电性能的影响

mjl@ jm`@ krkwk ldrst l`lmy@ Pub Date : 2020-12-31 DOI: 10.32894/kujss.2020.167506

Fouad Kamal Tawfeeq Alsumaidaei, H. Mohammed

引用次数: 1