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Simultaneous Optimization of Power Factor and Thermal Conductivity towards High-Performance InSb-Based Thermoelectric Materials

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Chinese Physics Letters 2021年第9期38卷 80-84页

作者： Wang Li Tian Xu Zheng Ma Abubakar-yakubu haruna Qing-Hui Jiang Yu-Bo Luo Jun-You Yang State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China

Thermoelectric performance of InSb is restricted by its low Seebeck coefficient and high thermal ***,CuCl is employed to optimize simultaneously the electrical and thermal transport properties of *** substitution of Cl for Sb results in enhanced electron effective mass,leading to high Seebeck coefficient of-159.9 μV/K and high power factor of 31.5 μW·cm^(-1)·K^(-2) at 733 K for InSb+5 wt% CuCl *** addition,CuCl doping creates hierarchical architectures composed of CugIn4,Sb,Cu2Sb in InSb,leading to a strengthened phonon scattering in a wide wavelength(i.e.,nano to meso scale),thus a low lattice thermal conductivity of 2.97 W·m^(-1)· K^(-1) at 733 K in InSb+5 wt% *** a result,a maximum ZT of 0.77 at 733 K has been achieved for the InSb+5 wt% CuCl sample,increasing by ~250% compared to pristine InSb.

关键词： InSb scattering Seebeck

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Catatonia: Cavum Septum Pellucidum and Vergae, a Cause or a Coincidence?

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Open Journal of Psychiatry 2023年第4期13卷 221-228页

作者： Mustapha Gudaji Zaharaddeen Garba Habib haruna yakubu Department of Psychiatry Faculty of Clinical Sciences College of Health Sciences Bayero University Kano/Aminu Kano Teaching Kano Nigeria

Background: Many studies in the 20th century have reported an association between Schizophrenia and Catatonia. Structural brain abnormalities have also been found in many psychotic illnesses, including schizophrenia and there are findings of association of large ventricles with chronic and deteriorating psychosis. It is possible that a large ventricular system may increase the likelihood of catatonia with a chronic course. Cavum Septum Pellucidum (CSP) and Cavum Vergae (CV) are structural abnormalities that have been associated with Schizophrenia. This is a case report of the presence of persistent CSP and CV in a patient diagnosed with schizophrenia with catatonia. Conclusion: Although there are several reports of the findings of a persistent large CSP and CV in patients with Schizophrenia, it is questionable whether the CSP and CV are the cause of the Catatonia or their occurrence is a mere coincidence.

关键词： Schizophrenia Cavum Septum Pellucidum Cavum Vergae Catatonia

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Prevalence of iron deficiency anaemia among blood donors in Sokoto,North Western,Nigeria

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Journal of Coastal Life Medicine 2015年第4期 312-316页

作者： Buhari Hauwa Ali Erhabor Osaro Imrana Sani Abubakar Wase Onuigwe Festus Okwesili Augustine Isaac Zama yakubu Abdulrahaman Dallatu Kabiru Yeldu Mohammed haruna Faculty of Medical Laboratory Science Department of HaematologyUsmanu Danfodiyo University SokotoSokotoNigeria Department of Clinical Biochemistry Usmanu Danfodiyo University SokotoSokotoNigeria

Objective:To investigate the prevalence and socio-demographic factors associated with iron deficiency anaemia among blood donors in Sokoto,North Western,Nigeria using a combination of haemoglobin haematocrit and serum ferritin ***:One hundred and fifty consecutively recruited whole blood donors,comprising of 148(98.7%)family replacement donors and 2(1.3%)voluntary non-remunerated donors aged 18-60 years and mean age 39±21 years constituted the subjects for this *** full blood count was carried out using Mythic 22 CT fully automated haematology analyser(Orphee SA,Switzerland).Serum was tested for ferritin using a human ferritin enzyme immunoassay kit-ACCU Diag^(™)ELISA Ferritin kit(Diagnostic Automation/Cortez Diagnostic ***,USA).Results:The prevalence of anaemia(haemoglobin<11.0 g/dL)was evident in 24(16%)and iron deficiency anaemia(serum ferritin<12 ng/mL+haemoglobin<11 g/dL)in 5(10%)of *** haemoglobin and ferritin levels was significantly lower among regular voluntary remunerated blood donors(13.50±0.00 and 34.88±0.00)compared to family replacement donors(14.10±2.40 and 74.12±45.20)respectively(P=0.01 and 0.05 respectively).The mean haemoglobin and ferritin level was compared among donors based on *** haemoglobin and ferritin was significantly higher among male donors(14.20±2.00,78.02±49.10)compared to female donors(12.35±2.5 and 42.20±32.13)(P=0.01).The mean haemoglobin and ferritin level was compared among donors based on occupational *** haemoglobin and ferritin was significantly higher among civil servants compared to farmers and students(P=0.01).Conclusions:Iron deficiency anaemia is prevalent among blood donors in Sokoto,North Western,*** is need to include routine ferritin in the blood donor testing protocol in the area to enable the diagnosis of donors with latent iron deficiency anaemia to facilitate iron supplementation for regular blood donors at risk and those with iron deficiency anaemia

关键词： Iron deficiency Anaemia Blood donors Sokoto Nigeria

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