Management of rare ectopic teeth eruption: case series

Olutayo James(Olutayo James ),Ibrahim Kayode Suleiman(Ibrahim Kayode Suleiman ),Mukhtar Modibbo Ahmad(Mukhtar Modibbo Ahmad ),Hector Oladapo Olasoji(Hector Oladapo Olasoji ) 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.2

Objectives: An ectopic tooth is a rare eruption of a tooth out of the normal dental apparatus and occurs commonly with the third molar. Thus, in this study, we reported a case series of ectopic teeth in rare jaw locations and highlight the associated pathology and our experience in the surgical management. Patients and Methods: All cases of ectopic tooth managed at the Department of Oral and Maxillofacial Surgery, University of Maiduguri Teaching Hospital from January 2011 to December 2020 were reviewed. The information retrieved includes biodata, location of the ectopic tooth, signs, symptoms, type of tooth and associated pathology, surgical approach and complications. Results: Ten cases of ectopic teeth were identified over the study period. This comprised 80.0% males with a mean age was 23.3 years. The antrum and lower border of the mandible accounted for 50.0% and 40.0% of the ectopic locations, respectively. Dentigerous cyst was the most associated pathology (70%) and usually presented with pain and swelling. Surgical intervention predominantly via the intraoral route was performed if indicated. Conclusion: Ectopic teeth are rare and not always associated with pathology. A high index of suspicion and radiological investigation are necessary for diagnosis. A more extensive multi-center study is however recommended to determine the prevalence of ectopic teeth other than the third molar.

녹차와 피부 -항염증과 자외선 보호 효과-

Hasan Mukhtar,Nihal Ahmad 한국식품과학회 2001 국제녹차심포지엄 Vol.2001 No.1

녹차와 피부

Hasan Mukhtar,Nihal Ahmad 한국식품과학회 2001 심포지엄 Vol.2001 No.1

Green Tea and Skin

Hasan Mukhtar,Nihal Ahmad 한국식품과학회 2001 심포지엄 Vol.2001 No.1

Diagnosis and Management of Isolated Superior Mesenteric Artery Dissection: A Systematic Review and Meta-Analysis

Waqas Ullah,Maryam Mukhtar,Hafez Mohammad Abdullah,Mamoon Ur Rashid,Asrar Ahmad,Abu Hurairah,Usman Sarwar,Vincent M. Figueredo 대한심장학회 2019 Korean Circulation Journal Vol.49 No.5

The objective of this study was to analyze the three different management modalities for isolated superior mesenteric artery (SMA) dissection. We did a comprehensive literature search and found 703 articles on the initial search, out of which 111 articles consisting of 145 patients were selected for analysis. The mean age was 55.7 years (standard deviation,9.7;33–85) and 80.6% were male. These patients were managed conservatively (41.3%), endovascularly (28.1%) or surgically (30%). The median follow-up was 10 months (interquartile range [IQR], 4–18 months), 12 months (IQR, 6–19 months) and 14 months (IQR, 6–20 months) respectively. Contrast-enhanced computed tomography (CT) was the most commonly used diagnostic tool in the conservative group (43.8%), while conventional CT scan was the most widely used in endovascular (58.1%) and surgical group (50%). 17% percent of the conservative group had SMA angiography for diagnosis, while this was less than 3% in the other groups. Of these patients, 96.7%, 97.4%, and 100.0% recovered successfully in the conservative, endovascular, and surgical groups respectively. There was no significant difference in the mortality between the three groups (Pearson χ2=0.482). This suggests a conservative and endovascular approach could be used in most patients, which can reduce costs and surgery-related morbidity and mortality. Surgical management should be reserved for cases having infarction or widespread bowel ischemia and in cases where other treatment modalities fail.

Properties of high performance heavyweight concrete mixtures containing different types of coarse aggregates

Al-Dulaijan, Salah U.,Azeez, Mukhtar Oluwaseun,Ahmad, Shamsad,Maslehuddin, Mohammed Techno-Press 2021 Advances in concrete construction Vol.12 No.1

Heavyweight concrete having unit weight above 2600 kg/m³ has wide applications that include radiation shielding, offshore, and ballasting of pipelines, etc. In this study, high-performance heavyweight concrete mixtures were developed utilizing industrial byproducts as high-density coarse aggregates. These heavyweight coarse aggregates included steel slag, steel shots, and iron ore. Normal-weight limestone aggregate was also used in the control mixture and for partially replacing the heavyweight aggregates in some of the mixtures. Considering different combinations of coarse aggregates, a total of nineteen concrete mixtures with same water/cement ratio and cement content were prepared and tested for evaluating their performance in terms of different engineering properties. Except the control mixture containing normal-weight limestone aggregate, all eighteen heavyweight concrete mixtures considered in the present work, achieved unit weight (dry density) in the acceptable range of 2600 to 3563 kg/m³. Most of the heavyweight concrete mixtures attained compressive strength either close to or more than 40 MPa, splitting tensile strength and modulus of elasticity above the minimum acceptable limits, drying shrinkage below permissible value, and high resistance against reinforcement corrosion as indicated by their high electrical resistivity and low chloride diffusion coefficient. The experimental data generated under the present work can be utilized to select optimum mixtures of heavyweight concrete satisfying the service conditions.

RPSMDSM: Residential Power Scheduling and Modelling for Demand Side Management

( Sheeraz Ahmed ),( Ali Raza ),( Shahryar Shafique ),( Mukhtar Ahmad ),( M. Yousaf Ali Khan ),( Asif Nawaz ),( Rohi Tariq ) 한국인터넷정보학회 2020 KSII Transactions on Internet and Information Syst Vol.14 No.6

In third world countries like Pakistan, the production of electricity has been quickly reduced in past years due to rely on the fossil fuel. According to a survey conducted in 2017, the overall electrical energy capacity was 22,797MW, since the electrical grids have gone too old, therefore the efficiency of grids, goes down to nearly 17000MW. Significant addition of fossil fuel, hydro and nuclear is 64.2%, 29% and 5.8% respectively in the total electricity production in Pakistan. In 2018, the demand crossed 20,223MW, compared to peak generation of 15,400 to 15,700MW as by the Ministry of Water and Power. Country faces a deficit of almost 4000MW to 5000MW for the duration of 2019 hot summer term. Focus on one aspect considering Demand Side Management (DSM) cannot oversea the reduction of gap between power demand and customer supply, which eventually leads to the issue of load shedding. Hence, a scheduling scheme is proposed in this paper called RPSMDSM that is based on selection of those appliances that need to be only Turned-On, on priority during peak hours consuming minimum energy. The Home Energy Management (HEM) system is integrated between consumer and utility and bidirectional flow is presented in the scheme. During peak hours of electricity, the RPSMDSM is capable to persuade less power consumption and accomplish productivity in load management. Simulations show that RPSMDSM scheme helps in scheduling the electricity loads from peak price to off-peak price hours. As a result, minimization in electricity cost as well as (Peak-to-Average Ratio) PAR are accomplished with sensible waiting time.

Structural, spectral, dielectric and magnetic properties of Co–Cr-substituted hexagonal ferrites with X-type structure

Ejaz Syeda Rabia,Khan Muhammad Azhar,Gulbadan Shagufta,Akhtar Majid Niaz,Ahmad Mukhtar,Hussain Altaf,Islam Misbah ul 한국세라믹학회 2022 한국세라믹학회지 Vol.59 No.4

Co 2+ and Cr 3+ -substituted SrBaCu Fe 28- y O 46 X-type hexaferrite with x = y = 0, 0.1 to 0.5 (step = 0.1) were prepared Co Cr 2- x x y through auto-combustion sol–gel method and sintered at 1250 °C for 5 h which was found from thermal analysis. The thermal investigation, phase detection, spectral, magnetic, and dielectric characteristics of the prepared composition were investigated by TGA, XRD, FTIR, VSM, and dielectric measurement. XRD patterns of the entire composition confi rmed the development of a single phase of X-type structure. The enhancement in the lattice parameters and cell volume was observed by varying the Co–Cr concentration, attributed to the larger ionic radii substitution. FTIR\spectra of all samples exhibit two absorption peaks in the wavenumber range of 500–550  cm −1 and 418–425  cm −1 that confi rm the formation of hexaferrite. The dielectric properties have been inspected based on frequency and substitution variation in the sample. The dielectric constant exhibits the increasing trend with the Co–Cr ratio. The enhancement in Ac conductivity was also found by increased substitution ions. Single semi-circles were examined in Nyquist plots, attributed to the contribution of the grain boundaries. Detailed magnetic parameters such as saturation magnetization, remanence, squareness ratio, coercivity, and magneto-crystalline anisotropy constant were measured. By the increase in Co–Cr substitution the increased of saturation magnetization ( Ms ) from 61.12 emu/g to 64.89 emu/g, the remanence ( Mr ) from 27.43 emu/g to 30.71 emu/g, and coercivity ( H c ) from 1654.56 Oe to 1863.54 Oe was found. Therefore, the synthesized SrBaCu 2 X-type hexagonal ferrites with the appropriate amount of Co–Cr substitution are suitable candidates for microwave devices and valuable in longitudinal recording media.

Enhanced performance of lanthanum orthoferrite/chitosan nanocomposites for adsorptive photocatalytic removal of Reactive Black 5

Muhd Arif Aizat Marhalim,Safia Syazana Mohtar,Abdussamad Mukhtar Mohammed,Farhana Aziz,Mohd Nazri Mohd Sokri,Wan Norharyati Wan Salleh,Norhaniza Yusof,Juhana Jaafar,Ahmad Fauzi Ismail,Madzlan Aziz,Ros 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.8

New lanthanum orthoferrite (LaFeO3)/chitosan nanocomposites were synthesized with different chitosan loadings (15 and 35%). Their adsorptive photocatalytic activity in the removal of Reactive Black 5 (RB5) was studied by manipulating the pH of the RB5 solution (pH 3, pH 6, pH 9), the catalyst loading (1 g L1, 2 g L1, and 3 g L1), and the initial concentration of RB5 (30mg L1, 50mg L1, and 70 mg L1) under 100W LED light. The nanocomposites have a nanocrystalline structure similar to LaFeO3 with a lower SBET and PV but a higher PR. The LaFeO3 was distributed well on chitosan matrices with variations in the elemental composition. The band gap was gradually decreased with increased chitosan loading. The nanocomposite with 15% chitosan loading (LC15) resulted as the most prominent photocatalyst with the highest removal of RB5 up to 98.5% under experimental conditions of pH 6, 2 g L1 of catalyst loading, and 30mg L1 of initial RB5 concentration. The LC15 showed good stability, wherein the degradation efficiency was more than 90% after the fifth cycle with no significant change in the chemical properties. This work provides a technique to improve the removal of recalcitrant dyes through the processing of adsorptive photocatalysis utilizing adsorbent and perovskite.

Mechanical and thermal properties of carboxymethyl fibers (CMF)/PVA based nanocomposite membranes

Muhammad Bilal Khan Niazi,Zaib Jahan,Arooj Ahmed,Bushra Uzair,Ahmad Mukhtar,Øyvind Weiby Gregersen 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.90 No.-

Carboxymethylfibers (CMF) of cellulose are renewable biopolymer and have shown strong reinforcingproperties when added to a compatible polymer matrix. The objective of this study was to investigate theeffect of CMF on the mechanical, thermal and swelling properties of polyvinyl alcohol (PVA) membranes. The PVA/CMF composite membranes with different proportions of CMF ranging from 1 wt.% to 6 wt.%were prepared by solution casting method. The membranes were characterized by SEM, TGA, XRD, FTIRand mechanical testing. The results revealed that at low CMF concentration composite membranesshowed homogenous dispersion of CMF in PVA matrix. The incorporation of CMF enhanced thecrystallinity of composite membranes with increase in relative humidity (RH). Furthermore, themechanical strength and moisture uptake of PVA/CMF nanocomposite membranes were enhanced afterinclusion of CMF. TGA and DSC results revealed that the addition of CMF has no significant impact on thethermal properties. PVA/CMF nanocomposite membranes showed good potential to be applied for gasseparation application particularly for CO2 capture.