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Electrospinning Preparation of PAN/TiO2 Nanofibers and Photocatalytic Regeneration Properties for Methylene Blue dye 静电纺丝制备PAN/TiO2纳米纤维及其对亚甲基蓝染料的光催化再生性能
Pub Date : 2023-02-12 DOI: 10.31257/2018/jkp/2022/140210
Ali K. Abdullah, Farah M. Radee, Widad S. Hanoosh
The nanofiber membranes prepared by electrospinning method attracted the attention of researchers in the field of pollutant treatment due to their ease of manufacture, efficient performance and ease of removal. Some of these membranes lack the possibility of reuse due to low efficiency and high regeneration cost. In this paper, we were able to prepare nanofiber membranes from polyacrylonitrile (PAN) and PAN/TiO2 by adding different ratios (5,10 and 15) wt% of TiO2 respectively. The resultants nanofibers were characterized using Field Emission Scanning microscope (SEM), Fourier Transform Infrared spectroscopy (FTIR). These prepared membranes enable effective and complete degradation of MB dye in water using ultraviolet (UV) irradiation with the possibility of reuse and high efficiency after washing with distilled water. The efficiency is up to 98% when 15wt% TiO2 was used, while the degradation reaches to 83% when reused the nanofibers composite (PAN/TiO2). The work not only explains the possibility of using and reusing nanofiber films in the treatment of pollutants but also gives a detailed of understanding the behavior of the membrane in dye degradation.
静电纺丝法制备的纳米纤维膜因其制备方便、性能高效、易于去除等优点,引起了污染物处理领域研究人员的广泛关注。其中一些膜由于效率低、再生成本高而缺乏再利用的可能性。在本文中,我们可以通过添加不同比例(5、10和15)wt%的TiO2,分别从聚丙烯腈(PAN)和PAN/TiO2制备纳米纤维膜。利用场发射扫描显微镜(SEM)、傅里叶红外光谱(FTIR)对合成的纳米纤维进行了表征。这些制备的膜能够在紫外线(UV)照射下有效和完全地降解水中的MB染料,并且在蒸馏水洗涤后具有重复使用的可能性和高效率。当TiO2用量为15wt%时,降解效率可达98%,而当PAN/TiO2复合材料重复使用时,降解率可达83%。这项工作不仅解释了纳米纤维膜在污染物处理中使用和再利用的可能性,而且还详细了解了纳米纤维膜在染料降解中的行为。
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引用次数: 0
Electron collision with Ammonia and phosphine at wide range of energies 氨和磷化氢在大能量范围内的电子碰撞
Pub Date : 2023-02-06 DOI: 10.31257/2018/jkp/2022/140208
Ahlam Yassee, Ahmed Basil
The NH3 and PH3 molecules achieve differential electron elastic scattering cross-sections for energies ranging from 15 eV to 500 eV for ammonia and from 5 to 500 eV for phosphine. Calculations are performed using partial waveforms describing the target molecule using a single Hartree-Fock Molecular Function Center. The potentials used include a constant part—numerically obtained from quantum computation in addition to subtle effects such as correlation, polarization, and potential exchange,  results of this model clearly show the role of the exchange, as well as the contributions of correlation and polarization, especially at low scattering angles and incident energies. The differential cross-sections obtained were compared with a large amount of experimental data from the research, and good agreement was found. Throughout the scattering angles and power ranges examined here.http://dx.doi.org/10.31257/2018/JKP/2022/140208
NH3和PH3分子在15 ~ 500 eV的氨和5 ~ 500 eV的磷化氢能量范围内实现了电子弹性散射的微分截面。使用单个Hartree-Fock分子功能中心使用描述目标分子的部分波形进行计算。所使用的势包括从量子计算中获得的常数部分,以及相关、极化和势交换等微妙的效应,该模型的结果清楚地显示了交换的作用,以及相关和极化的贡献,特别是在低散射角和入射能量下。将所得的微分截面与大量实验数据进行了比较,结果吻合较好。整个散射角度和功率范围都在这里检查http://dx.doi.org/10.31257/2018/JKP/2022/140208
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引用次数: 0
No-Core optical fibers sensor for detecting hemoglobin concentration (HB) based on the Surface Plasmon resonance. 基于表面等离子体共振的无芯光纤血红蛋白浓度传感器。
Pub Date : 2023-02-06 DOI: 10.31257/2018/jkp/2022/140209
Mustafa H.Nida, Soudad S. Al-Bassam
In this work, a fiber-optic biomedical sensor was manufactured to detect hemoglobin percentages in the blood. SPR-based coreless optical fibers were developed and implemented using single and multiple optical fibers. It was also used to calculate refractive indices and concentrations of hemoglobin in blood samples. An optical fiber, with a thickness of 40 nanometers, was deposited on gold metal for the sensing area to increase the sensitivity of the sensor. The optical fiber used in this work has a diameter of 125μm, no core, and is made up of a pure silica glass rod and an acrylate coating. The length of the fiber was 4cm removed buffer and the splicing process was done. It is found in practice that when the sensitive refractive index increases, the resonant wavelength increases due to the decrease in energy.
在这项工作中,制造了一种光纤生物医学传感器来检测血液中的血红蛋白百分比。基于spr的无芯光纤采用单根和多根光纤进行了开发和实现。它也被用来计算血液样本中的折射率和血红蛋白浓度。为了提高传感器的灵敏度,在传感区域的金金属上镀上了厚度为40纳米的光纤。光纤的直径为125μm,无芯,由纯硅玻璃棒和丙烯酸酯涂层组成。光纤长度为4cm,去掉缓冲,进行拼接处理。实践中发现,当敏感折射率增加时,由于能量的减少,共振波长增加。
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引用次数: 0
Optical fiber biomedical sensor based on surface plasmon resonance for Candida detection 基于表面等离子体共振的光纤生物医学传感器检测念珠菌
Pub Date : 2023-01-17 DOI: 10.31257/2018/jkp/v14.i02.10303
Huda Sahi, Soudad S. Al-Bassam
In this work, optical fibers were designed and implemented as a medical sensor based on surface Plasmon resonance (SPR) to estimate different refractive indices and (Candida) concentrations and improve the endoscope's performance. Using multi-mode and single-mode optical fibers deposited by 40 nm thickness gold metal deposition for the sensing area, In practice, it was found that when the refractive index of the sensitive medium increases, the length of the resonant wave increases due to the decrease in energy.
在这项工作中,设计并实现了基于表面等离子体共振(SPR)的光纤作为医学传感器,以估计不同的折射率和(假丝酵母)浓度,提高内窥镜的性能。传感区采用厚度为40 nm的金金属沉积的多模和单模光纤,在实践中发现,当敏感介质的折射率增加时,由于能量的减少,谐振波的长度增加。
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引用次数: 0
Influence of additional filters on radiation dose during chest radiography. 胸片造影时附加滤光片对辐射剂量的影响。
Pub Date : 2023-01-03 DOI: 10.31257/2018/jkp/2022/140206
S. Al-Murshedi, A. Mohammed Ali
The goal of this study was to examine the impact of using additional aluminum (Al) and copper (Cu) filters on radiation dose during the adult chest x-ray examination. Adult chest phantoms without and with different slabs of animal fat were used for simulating underweight, overweight, and obese patients, respectively. Phantoms were examined without and with various levels of extra Al and Cu filtering over a range of exposure parameters. A dose area product (DAP) meter was used to measure the radiation dose. Results demonstrated that radiation doses were significantly reduced (p=0.001) when applying extra filters compared with no filters for all of the different phantom sizes. The highest reduction in radiation dosage was 38, 41, and 42 percent for underweight, overweight, and obese phantom size, respectively, by 1mm Al+0.2mm Cu. In conclusion, the use of extra filters in chest x-ray imaging provides an optimal  dose reduction choice regardless of the thickness of the chest region to be radiographed.DOI: http://dx.doi.org/10.31257/2018/JKP/2022/140206
本研究的目的是探讨在成人胸部x线检查中使用额外的铝(Al)和铜(Cu)滤光片对辐射剂量的影响。分别用没有和有不同动物脂肪块的成人胸部模型来模拟体重过轻、超重和肥胖患者。在不同的暴露参数范围内,在没有和有不同水平的额外铝和铜过滤的情况下,对幻影进行了检查。用剂量面积积(DAP)计测量辐照剂量。结果表明,对于所有不同尺寸的幻影,与不使用过滤器相比,使用额外过滤器时,辐射剂量显着降低(p=0.001)。对于体重不足、超重和肥胖的幻影尺寸,分别减少1mm Al+0.2mm Cu的辐射剂量,分别减少38%、41%和42%。总之,在胸部x线成像中使用额外的滤光片提供了一个最佳的剂量减少选择,而不管要拍摄的胸部区域的厚度。DOI: http://dx.doi.org/10.31257/2018/JKP/2022/140206
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引用次数: 0
A new approach to prepare nano hydroxyapatite from oyster shells used for dental applications 用牡蛎壳制备纳米羟基磷灰石的新方法
Pub Date : 2022-12-17 DOI: 10.31257/2018/jkp/2022/140205
Kifayah Aljaberi, Rafid M. AlBadr, Kareema M. Ziadan
HA (hydroxyapatite) is considered one of the biomaterials widely, it is applied in many applications like medical and dentistry. In this research, NHA powder was prepared from some natural source rich in calcium carbonate, it was prepared by calcination method at 1200 ℃ for 2 hours. The samples were diagnosed by using various diagnostic tests including scanning electron microscopy (SEM (, X-ray diffraction (XRD), Fourier transform infrared (FTIR), X-ray spectroscopy (EDX), and density measurements. The XRD results showed that HA as-prepared high purity and the crystallite size as around 63.561± 11.327 nm, while the particle sizes≈ 63 nm according to BET, also EDX clearly showed elements (Ca, P, O). As for the density of NHA, it was measured and found to be equal to (2.98±0.1) g/cm3. Characterization results (XRD, SEM, EDX, FTIR, and BET) showed the morphological and structural properties of the Hydroxyapatite.
羟基磷灰石(hydroxyapatite, HA)是一种被广泛认为的生物材料,在医学、牙科等领域有着广泛的应用。本研究以富含碳酸钙的天然原料为原料,在1200℃下煅烧2小时制备NHA粉体。通过扫描电镜(SEM)、x射线衍射(XRD)、傅里叶变换红外(FTIR)、x射线光谱(EDX)和密度测量等多种诊断测试对样品进行诊断。XRD结果表明,制备的HA纯度高,晶粒尺寸约为63.561±11.327 nm,而BET的粒径约为63 nm, EDX也清晰地显示出元素(Ca, P, O), NHA的密度为(2.98±0.1)g/cm3。表征结果(XRD, SEM, EDX, FTIR和BET)显示了羟基磷灰石的形态和结构特性。
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引用次数: 0
Structural, Electrical and Sensing properties of Cd-doped ZnTe thin films, prepared by thermal evaporation method 热蒸发法制备镉掺杂ZnTe薄膜的结构、电学和传感性能
Pub Date : 2022-12-17 DOI: 10.31257/2018/jkp/2022/140204
Raghda M.A, Firas A. Najim
This study concentrates on the examination of the functional, electrical, and sensing qualities of ZnTe thin films that were prepared by the thermal evaporation method, with a thickness of 300 nm deposited on glass bases prior to annealing at a temperature of (350ºC). The influence of doping with cadmium (7%) on the structural, electrical, and sensing properties of dopant films was also investigated. The results of XRD showed that the pure and doped films were polycrystalline and cubic. According to the findings of the electrical properties of this study, the specific resistance decreases with increasing temperature. It was found that the sensitivity of ZnTe films rises upon doping and annealing, so the sensitivity was calculated.
本研究主要研究了热蒸发法制备的ZnTe薄膜的功能、电学和传感质量,该薄膜的厚度为300 nm,沉积在玻璃基上,然后在350℃的温度下退火。研究了7%镉掺杂对掺杂膜结构、电学和传感性能的影响。XRD结果表明,纯膜和掺杂膜均为多晶和立方结构。根据本研究的电学性质发现,比电阻随温度的升高而降低。发现掺杂和退火后ZnTe薄膜的灵敏度提高,因此计算了灵敏度。
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引用次数: 0
Physical Properties and Transmitted Sunlight of Polyvinyl Chloride/ZnO Nanocomposites Films 聚氯乙烯/ZnO纳米复合薄膜的物理性能及透过阳光的性能
Pub Date : 2022-12-17 DOI: 10.31257/2018/jkp/2022/140203
H. Ali, Mahasin F. Hadi Al- Kadhemy, Asrar Abdulmunem Saeed
The optical properties of polyvinyl chloride (PVC) and PVC/Zinc Oxide (ZnO) films were considered with different amounts of ZnONPs (0.001, 0.002, 0.003, 0.004 and 0.005) g. Using a Tetrahydrofuran (THF) solution all films be prepared by casting method. XRD results showed the amorphous structure of PVC film and Hexagonal crystalline structure of ZnO NPs, PVC/ZnO nanocomposites appear as pattern of PVC films so the peaks of ZnO don’t appear in it. FESEM image of PVC, ZnO and structure of PVC/ZnO nanocomposites seems to have cluster aggregates in different size. FTIR spectra revealed that ZnONPs had no effect on the polymer structure as there are no covalent bonds between PVC and ZnO NPs. Increasing the amounts of ZnONPs was seen to improve the optical properties (Absorbance, absorption coefficient and extinction coefficient) for PVC polymer. PVC polymer transmittance and energy gap decreased from 5.25 eV to 4.98 eV with increasing the amounts of ZnO NPs in nanocomposites. The solar radiation intensity in Baghdad was measured at a rate of 1 hour for the pure PVC films and PVC/ZnONPs for seven consecutive days in a rate from 6 A.M. to 6 P.M. (13 h). As can be observed, all films have the same ratio of transmitted radiation strength to sunlight intensity for all hours and days.
研究了不同ZnONPs(0.001、0.002、0.003、0.004和0.005)g)用量下聚氯乙烯(PVC)和PVC/氧化锌(ZnO)薄膜的光学性能。采用四氢呋喃(THF)溶液,采用铸造法制备了所有薄膜。XRD结果表明,PVC膜呈无定形结构,ZnO纳米粒子呈六方晶状结构,PVC/ZnO纳米复合材料呈现出PVC膜的形态,没有ZnO的峰出现。PVC、ZnO的FESEM图像和PVC/ZnO纳米复合材料的结构似乎具有不同大小的团簇聚集体。FTIR光谱显示,ZnONPs与PVC之间不存在共价键,对聚合物结构没有影响。增加ZnONPs的用量可以改善聚氯乙烯聚合物的光学性能(吸光度、吸收系数和消光系数)。随着ZnO纳米粒子数量的增加,PVC聚合物的透光率和能隙从5.25 eV降低到4.98 eV。在巴格达以1小时的速率连续7天测量纯PVC薄膜和PVC/ZnONPs的太阳辐射强度,从早上6点到下午6点(13小时)。可以观察到,所有薄膜在所有小时和天数内具有相同的透射辐射强度与阳光强度之比。
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引用次数: 0
Studying the Fluorescence Resonance Energy Transfer Between Two Dyes of Laser in an Aqueous Solution 水溶液中两种激光染料间荧光共振能量传递的研究
Pub Date : 2022-12-15 DOI: 10.31257/2018/jkp/2022/140201
Yusser R.Mohammed, Waled S. Abdullwahab
In the past quarter century, applications of fluorescence resonance energy transfer (FRET) have grown dramatically, and the technology has become an indispensable tool in a wide variety of biological and biophysical domains.  It is utilized, in order to acquire information on the conformational changes that occur in single molecules. By utilizing the fluorescence correlation spectroscopy, the pharmaceutical sector has also built huge fluorescence detection systems with extremely small sample sizes, reaching down to the level of single molecules. The fluorescence resonance energy transfer (FRET) between the two dyes, Acriflavine (Acf) and Rhodamine B (RhB), were examined in solution. Energy transfer was observed in fluorescence resonance imaging solutions containing Acriflavine and Rhodamine B with different concentrations of the acceptor RhB dye in the range of (1.5×10-5 M  to 3.5×10-5M). Studies using Both UV–Vis absorption and fluorescence spectroscopy demonstrated that the two dyes, when dissolved in solution, appear largely as monomers.
在过去的四分之一世纪中,荧光共振能量转移(FRET)的应用急剧增长,该技术已成为各种生物和生物物理领域不可或缺的工具。它被用来获取发生在单个分子中的构象变化的信息。利用荧光相关光谱技术,制药行业也建立了庞大的荧光检测系统,其样本量极小,甚至可以达到单分子水平。在溶液中考察了吖啶黄(Acf)和罗丹明B (RhB)两种染料之间的荧光共振能量转移(FRET)。在含有吖啶黄碱和罗丹明B的荧光共振成像溶液中,在(1.5×10-5 M至3.5×10-5M)范围内不同浓度的受体RhB染料中观察到能量转移。紫外-可见吸收和荧光光谱研究表明,这两种染料溶解在溶液中,主要以单体形式出现。
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引用次数: 0
Measurement of electron temperature (Te) and electron density (ne) of ZnO RF plasma ZnO射频等离子体电子温度(Te)和电子密度(ne)的测量
Pub Date : 2022-12-15 DOI: 10.31257/2018/jkp/2022/140202
Mustafa Haydar, Abdulhussain A. khadayeir
In this study, the ratio method between the two spectral lines was used to calculate the electron temperature (Te) and the density (ne) of argon gas for a zinc oxide (ZnO) cathode using the spectroscopic method. These parameters were calculated at various pressure and powers parameters (0.03,0.04,0.05,and 0.06 torr) and (50,60,70 and 80 W). The results revealed  that while the temperature (Te) increase of the electron with increased power and falls with increasing pressures, the density (ne) of the electrons increases with both power and pressure increases. The measured temperature of the electrons (Te) was within the range of (0.372-0.422 eV).Regarding the electron density (ne), it was in the range of  (1.6×1017-7.8×1017 cm-3).
本研究采用两谱线之比法,用光谱学方法计算氧化锌阴极的电子温度(Te)和氩气密度(ne)。在不同的压力和功率参数(0.03、0.04、0.05和0.06 torr)和(50、60、70和80 W)下计算了这些参数。结果表明,电子的温度(Te)随功率的增加而增加,随压力的增加而下降,而电子的密度(ne)随功率和压力的增加而增加。测得的电子温度(Te)在0.372 ~ 0.422 eV之间。电子密度ne在(1.6×1017-7.8×1017 cm-3)范围内。
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引用次数: 0
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Journal of Kufa - Physics
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