ON JORDAN GENERALIZED HIGHER BI-DERIVATIONS ON PRIME GAMMA RINGS

In this study , we define the concepts of a generalized higher bi-derivation , Jordan generalized higher bi-derivation and Jordan triple generalized higher bi-derivation on Г-rings and show that a Jordan  generalized higher bi-derivation on 2-torsion free prime Г-ring is a generalized higher bi-derivation

Effects of MHD and wall properties on the peristaltic transport of a Carreau fluid through porous medium

This work concerns the peristaltic flow of a Carreau fluid model through porous medium under combined effects of MHD and wall properties. The assumptions of Reynolds number and long wavelength is investigated. The flow is investigated in a wave frame of reference moving with velocity of the wave. The perturbation series in terms of the Weissenberg number (We <1) was used to obtain explicit forms for velocity field and stream function. The effects of thermal conductivity, Grashof number, Darcy number, magnet, rigidity, stiffness of the wall and viscous damping force parameters on velocity, temperature and stream function have been studied

Fabrication of PVC Enrofloxacin-Selective Electrodes for Estimating Enrofloxacin in Pure Form and as Preparation Formula:

أوجدت هذه الدراسة تطورا" لخصائص الاستجابة الكهروكيميائية للأقطاب الكهربائية الانتقائية للإينروفلوكساسين باستخدام الراسب والمعتمد على إنتاج الفوسفوتونجستيك ,بعد أستخدام مزيج من البولي فاينيل هيدروكلورايد (PVC) وداي بيوتيل فثاليت أوداي بيوتيل فوسفيت كمواد ملدنة. كانت أغشية المتحسسات الناتجة عبارة عن قطب كهربائي إنروفلوكساسين-فوسفوتونجستيك (متحسس1) ENR-DBPH-PTAوالقطب (متحسس2) .ENR-DOP-PTA  الاستجابات الخطية لأقطاب (ENR-DBPH-PTA)  و(ENR-DOP-PTA)  كانت ضمن المديات التركيزية 2.1×10-6- 10-1 و3.0×10-6- 10-2مول .لتر-1على التوالي, والتي تم ملاحظتها لكلا المتحسسين. الانحدارات كانت 0.24±51.61 و39.40±0.16  ملي فولت/حقبة.  ومديات الدالة الحامضية مساوية الى   8.5-2.5و2.0-9.0 التي لوحظت للمتحسسات 1و2 ,على التوالي. أظهرت أجهزة الاستشعار التي تم إنشاؤها معاملات انتقائية هائلة لعقار ENR.كما أظهرت أجهزة الاستشعار المقترحة خصائص علمية مفيدة لتقدير ENR في جرعة الدواء والشكل النقي.This study explored the development and qualities of the response of electrochemical properties of enrofloxacin-selective electrodes using precipitation based on producing phosphotungstic, after utilizing a matrix of polyvinyl chloride (PVC) and dibutyl phthalate or dibutyl phosphate as a plasticizer. The resulting membrane sensors were an enrofloxacin-phosphotungstic electrode (sensors 1) and an ENR-DOP-PTA electrode (sensors 2). Linear responses of (ENR-DBPH-PTA) and (ENR-DOP-PTA) within the concentration ranges of 2.1×10-6-10-1 and 3.0×10-6-10-2 mol. L-1, respectively, for both sensors were observed. Slopes of 51.61±0.24 and 39.40± 0.16 mV/decade and pH ranges equal to 2.5-8.5 and 2.0-9.0 were observed for sensors 1 and 2, respectively. The coefficients of selectivity of the created sensors demonstrated phenomenal selectivity for ENR. The proposed sensors showed useful scientific properties for the assurance of ENR in drug dosage and pure form

Effects of wall properties and heat transfer on the peristaltic transport of a jeffrey fluid through porous medium channel

A mathematical model is constructed to study the effect of heat transfer and elasticity of flexible walls with porous medium in swallowing of food bolus through the oesophagus. The food bolus is supposed to be Jeffrey fluid and the geometry of wall surface of oesophagus is considered as peristaltic wave through porous medium. The expressions for temperature field, axial velocity, transverse velocity and stream function are obtained under the assumptions of low Reynolds number and long wavelength. The effects of thermal conductivity, Grashof number, Darcy number, magnet,  rigidity, stiffness of the wall and viscous damping force parameters on velocity, temperature and stream function have been studied. It is noticed that increase in thermal conductivity, Darcy number, Grashof number  and the Jeffrey parameter results in increase of velocity distribution. It is found that the size of the trapped bolus increases with increase in the Jeffrey parameter, rigidity and stiffness.   Keywords­: Magnetohydrodynamic, Peristaltic transport, Oesophagus, Jeffrey fluid, Porous medium, Food bolus

Expression of E-cadherin, N-cadherin, and Cytokeratin 18 and 19 in Placentas of Women with Severe Preeclampsia

BACKGROUND: Although the exact mechanism leading to preeclampsia is not fully understood, abnormal trophoblast invasion contributes to its pathogenesis. Keratins and cadherin are known to play roles in the regulation of trophoblast proliferation. However, studies describing the association between keratins, cadherin, and preeclampsia are limited. AIM: The current study was conducted to investigate the association of these proteins with severe preeclampsia in Sudanese women. METHODS: A case–control study was conducted at Madani Maternity Hospital, Sudan. The cases included women with severe preeclampsia (n = 56) and healthy pregnant women as controls (n = 56). The assessment of keratin and cadherin was performed using immunohistochemical staining. RESULTS: There was no significant difference between the two groups in their mean age or parity. We found no significant differences in the expression of the markers E-cadherin, N-cadherin, or cytokeratin 18 and 19 in the placentas from individuals with preeclampsia versus controls. The number of placentas with severe preeclampsia versus controls expressing the E-cadherin, N-cadherin, cytokeratin 18, and cytokeratin 19 markers was 46 (82.1%) versus 46 (82.1%) (p = 0.988), 54 (96.4%) versus 48 (85.7%) (p = 0.121), 4 (7.1%) versus 0 (0%) (p = 0.126), and 11 (19.6%) versus 11 (19.6%) (p = 0.532), respectively. There was also no significant difference in the intensity of staining of these four markers (Ecadherin, N-cadherin, and cytokeratin 18 and 19) between severe preeclampsia and control placentas. CONCLUSION: Together, these results indicate that in this setting, the expression of E-cadherin, N-cadherin, CK18, and CK19 is not associated with severe preeclampsia

Earprint recognition using deep learning technique

Earprint has interestingly been considered for recognition systems. It refers to the shape of ear, where each person has a unique shape of earprint. It is a strong biometric pattern and it can effectively be used for authentications. In this paper, an efficient deep learning (DL) model for earprint recognition is designed. This model is named the deep earprint learning (DEL). It is a deep network that carefully designed for segmented and normalized ear patterns. IIT Delhi ear database (IITDED) version 1.0 has been exploited in this study. The best obtaining accuracy of 94% is recorded for the proposed DEL

Effects of Irrigation Interval, Nitrogen and Phosphorus on Grain Yield and biomass of Wheat

This study was conducted for two successive seasons of 1998/1999 and 1999/2000, at the Gezira Research Station Farm, Agricultural Research Corporation, Sudan, to investigate the effects of irrigation interval, nitrogen and phosphorus levels on wheat (Triticum aestivum L.( yield and yield components. The study consisted of three irrigation intervals (7,14,21 days), three N levels (0, 43 and 86 kg N/ha) and two P levels (0 and 43 kg P205/ha). Treatments were arranged in a split-split plot design with three replications. Results showed that the irrigation intervals of 7 and 14 days had positive effects on wheat grain and total dry matter yield as compared to the 21 days irrigation interval which negatively affected these parameters. Plants of the latter treatment were dwarf with thin stems and matured earlier resulting in low grain and biomass yields. The study, also, showed that the highest wheat yield was obtained with the application of N and P at the rates of 86 kg N and 43 kg P2O5/ha, respectively, with the irrigation interval of 7 days. &nbsp

Malaria and pre-eclampsia in an area with unstable malaria transmission in Central Sudan

<p>Abstract</p> <p>Background</p> <p>Placental malaria and pre-eclampsia occur frequently in women in tropics and are leading causes of maternal and perinatal morbidities and mortality. Few data exist concerning the interaction between placental malaria and pre-eclampsia.</p> <p>Methods</p> <p>A case control study was conducted in Medani Hospital, which locates in an area of unstable malaria transmission in Central Sudan. Case (N = 143) were women with pre-eclampsia, which was defined as systolic blood presure≥140 mm Hg or diastolic blood pressure ≥ 90 mm Hg and proteinuria. Controls were parturient women (N = 143) without any blood pressure values > 139/89 mm Hg or proteinuria. Obstetrical and medical characteristics were gathered from both groups through structured questionnaires. Placental histopathology examinations for malaria were performed.</p> <p>Results</p> <p>Twenty-eight (19.6%) vs. 16 (11.2%); <it>P </it>= 0.04 of the cases vs. controls, had placental malaria infections. Five (2%), 1 (2%) and 22 (28.0%) vs. 1, 2 and 13 of the placentae showed acute, chronic and past infection on histopathology examination in the two groups respectively, while 115 (80.4%) vs.127 (88.8%) of them showed no infection, <it>P </it>= 0.04. In multivariate analysis, while there were no associations between age, parity, educational level, lack of antenatal care, blood groups and body mass index and pre-eclampsia; family history of hypertension and placental malaria (OR = 2.3, 95% CI = 1.0-5.2; <it>P </it>= 0.04) were significantly associated with pre-eclampsia.</p> <p>Conclusion</p> <p>Placental malaria was associated with pre-eclampsia. Further research is needed.</p

Prevalence and Predictors of Pulmonary Arterial Hypertension in a Sample of Iraqi Patients with Systemic Sclerosis: A Cross-Sectional Study

Background: Pulmonary arterial hypertension (PAH) is now the most frequent cause of death in systemic sclerosis (SSc). Aims: The aims of the present study were to evaluate the prevalence of pulmonary arterial hypertension (PAH) and predictors in SSc among Iraqi patients. Materials and Methods: A cross-sectional study conducted on 56 patients with SSc diagnosed according to the criteria developed by the American College of Rheumatology. Baseline characteristics [age, sex, body mass index (BMI), duration of SSc, type of SSc, duration of Raynaud’s phenomenon, and presence of telangiectasia] were documented.  Antiscleroderma 70 (anti-SCL70) and anticentromere antibodies were measured. Doppler echocardiography was done to diagnose PAH. A risk score was obtained from 7 criteria, namely: Anti-Centromere Ab, Limited disease type, short duration of Raynaud's phenomena (&lt;2.5 years), older age group (40+ years), absence of Telangiectasia, female gender, and absence of anti SCL70 Ab.  Results: We found that PAH was present in 11 (19.6%) SSc patients with a 95% confidence interval of (9.2% to 30.0%). Risk score in addition to anti-centromere antibodies were enough to diagnose PAH with accuracy level of 89.3%. Conclusions: PAH in SSc occurs in significant proportion of patients. Risk score and anti-centromere antibodies had high accuracy level in predicting PAH. Screening of patients with SSc for PAH will help in early diagnosis and appropriate timely therapeutic intervention before significant endorgan damage occurs. Key words Systemic sclerosis. Connective  tissue. Pulmonary hypertension