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Wyświetlanie 1-11 z 11
Tytuł:
The genetic polymorphism in the STK11 does not affect gestational diabetes
Autorzy:
Alharbi, Khalid
Khan, Imran
Eldesouky, Malek
Al-Hakeem, Malak
Abotalib, Zeinab
Powiązania:
https://bibliotekanauki.pl/articles/1039007.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
gestational diabetes
STK11
rs8111699 polymorphism
Saudi women
Opis:
Gestational diabetes mellitus (GDM) is defined as carbohydrate intolerance of variable severity that develops during pregnancy. Recent studies indicate that GDM onset is rapid, and that women with GDM will develop other metabolic disorders such as obesity, type 2 diabetes, and cardiovascular disease in their future. Serine/threonine kinase 11 (STK11) is engaged in the insulin signaling pathway and encoded protein is an important activator of adenosine monophosphate activated protein kinase. Based on the previously reported association between the STK11 gene and diabetes, we aimed to investigate whether the rs8111699 polymorphism in STK11 has any role in gestation diabetes in Saudi women. In this case-control study, we recruited pregnant Saudi women based on biochemical analysis of their blood samples. Genomic DNA was obtained from confirmed subjects (200 GDM cases and 300 non-GDM). PCR-RFLP analysis was performed to detect the C528G polymorphism in the STK11 gene. The anthropometric and clinical data were similar between the GDM and non-GDM subjects (p > 0.05), whereas the biochemical analysis was significantly different between the cases and controls (p < 0.05). The genotype and allele frequencies between of the STK11 gene were not statistically significant difference between the GDM and non-GDM groups (OR=0.82; 95% CI:=0.6-1.0; p=0.12). Our study suggests that the rs8111699 polymorphism has no role in the development of GDM in pregnant Saudi women.
Źródło:
Acta Biochimica Polonica; 2015, 62, 3; 569-572
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of Apolipoprotein E gene polymorphism in the risk of familial hypercholesterolemia: a case-control study
Autorzy:
Almigbal, Turky
Batais, Mohammed
Hasanato, Rana
Alharbi, Fawaziah
Khan, Imran
Alharbi, Khalid
Powiązania:
https://bibliotekanauki.pl/articles/1038371.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
familial hypercholesterolemia
ApoE gene
TaqMan assay
Saudi population.
Opis:
Familial Hypercholesterolemia (FH) is characterized by elevated cholesterol and based on biochemical, clinical, and genetic studies and FH disease, which was documented even with limited mutations. Earlier studies focused on Apolipoprotein E (ApoE) in variable diseases. The current study aimed to investigate the genetic association between FH disease and ApoE gene polymorphisms (rs429358 and rs7412) in the Saudi population. This case-control study was a hospital-based study performed in Saudi Arabia. Two hundred and four subjects in total were recruited and consisted of FH participants (n=104) and the controls (n=100). Common polymorphisms of ApoE gene (rs429358 and rs7412) were chosen and subjected to the genotyping using the TaqMan assay. Moreover, the ApoE risk allele E4 was proved significantly associated with FH cases when compared with controls (OR-2.24 (95%CI: 1.06-4.70); p=0.02). Lipid profile parameters were significantly associated (p<0.05); however, the ApoE alleles and lipid profiles were not correlated (p>0.05). In conclusion, the FH case-control study was associated with the E4 allele in the Saudi population. However, E4 allele was appeared as a reliable risk marker for lipid profiles, but not for ApoE alleles.
Źródło:
Acta Biochimica Polonica; 2018, 65, 3; 415-420
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of C-shape Slotted MSPA for 5G Sub Band Applications on Three Different Substrates
Autorzy:
Nagaraju, P
Sachina, D.H
Khan, Imran
Kumaraswamy, H.V
Sudhindra, K. R.
Powiązania:
https://bibliotekanauki.pl/articles/2200694.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
C-shape
RT Duroid
Taconic (TLC)
FR4
5G
Opis:
A comparative analysis of a compact planar Square patch Microstrip Multiband antenna on three different substrates is proposed. The proposed design has a C-shaped slot etched on the square radiating part and the antenna is energized using microstrip feed line. RT Duroid (ε r= 2.2), Taconic (ε r= 3.2) and FR4 (ε r= 4.4) substrates are used for simulation analysis. The flow of current is modified by the C-shaped slot making the antenna to resonate at 3/4 and 6 bands for RT Duroid/Taconic and FR4 substrates respectively suitable for 5G sub GHz applications. The antenna has a compact dimension of 32 × 32 × 1.6 mm 3 and exhibits a return loss, S11 of less than -10dB for all the resonating frequencies for all three substrates. The analysis has been done by considering the S11 (Return loss <-10 dB), Directivity, Antenna Gain, VSWR and surface current distribution. Table II provides the comparison of parameters for different substrate material.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 4; 715--719
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lack of association between UBE2E2 gene polymorphism (rs7612463) and type 2 diabetes mellitus in a Saudi population
Autorzy:
Alharbi, Khalid
Khan, Imran
Al-Sheikh, Yazeed
Alharbi, Fawiziah
Alharbi, Fahad
Al-Nbaheen, May
Powiązania:
https://bibliotekanauki.pl/articles/1039212.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
T2DM
UBE2E2
PCR-RFLP
Saudi population
Opis:
The ubiquitin-conjugating enzyme E2E 2 (UBE2E2) gene plays an important role in insulin synthesis and secretion under conditions in which stress to the endoplasmic reticulum is increased in β-cells. In this case-control study, we have selected rs7612462 polymorphism within UBE2E2 gene to identify in a Saudi population the type 2 diabetes mellitus (T2DM) subjects. In total, 376 subjects with T2DM and 380 controls were enrolled in this study. We have collected 5 mL of peripheral blood from each participant for biochemical and molecular analyses. PCR-RFLP was used to generate genotypes at rs7612462 in all of the study subjects. Clinical data and anthropometric measurements of the patients were significantly different from those of the controls (p<0.05). All of the subjects used in this study were non-obese (25
Źródło:
Acta Biochimica Polonica; 2014, 61, 4; 769-772
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Hepta-band Antenna Loaded with E-shaped Slot for S/C/X-band Applications
Autorzy:
Khan, Imran
Devanagavi, Geetha D.
Sudhindra, K. R.
Ali, Tanweer
Rashmitha, R. K.
Gunjal, Raksha
Powiązania:
https://bibliotekanauki.pl/articles/226788.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
S-band
C-band
X-band
E-shaped slot
current distribution
Opis:
A compact planar multiband antenna operating at 3.1 (S-band) /4.7/6.4/7.6 (C-band) /8.9/10.4/11.8 GHz (X-band) is presented. The proposed Microstrip Patch Antenna (MSPA) consists of a rectangular radiator in which an E-shaped slot is etched out and a microstrip feed line. The E-shaped slot modifies the total current path thereby making the antenna to operate at seven useful bands. No external impedance matching circuit is used and the impedance matching at these bands are solely achieved by using a rectangular microstrip feed line of length 10mm (L6) and width 2mm (W10). The antenna has a compact dimension of and exhibits S11<-10dB bandwidth of about 6.45% (3.2-3.0GHz), 8.5% (4.9-4.5GHz), 7.6% (6.7-6.2GHz), 3.9% (7.8-7.5GHz), 5.7% (9.1-8.6GHz), 1.2% (10.44-10.35GHz) and 2.2% (11.87-11.62GHz). The simulation analysis of the antenna is carried out by using HFSS v.13.0.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 2; 167-174
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening for genetic mutations in LDLR gene with familial hypercholesterolemia patients in the Saudi population
Autorzy:
Alharbi, Khalid
Kashour, Tarek
Al-Hussaini, Wejdan
Nbaheen, May
Hasanato, Rana
Mohamed, Sarar
Tamimi, Waleed
Khan, Imran
Powiązania:
https://bibliotekanauki.pl/articles/1039005.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
DNA sequencing
familial hypercholesterolemia
LDLR gene
Saudi population
Opis:
Familial hypercholesterolemia (FH) is caused by genetic defects involving the low density lipoprotein-receptor (LDL-R), predisposing affected people to premature atherosclerotic cardiovascular disease and death. The aim of the present study was to assess certain exons in the LDLR gene mutation detection analysis affecting in the Saudi population with FH. This case-control study was carried out with 200 subjects; 100 were FH cases and 100 were healthy controls. Five mL of venous blood samples were collected from all the subjects and used for biochemical and genetic analysis. DNA was extracted from 2 mL of the EDTA samples, and precise primers were designed for LDL-R gene which includes Exon 3, 4 and 8. PCR was followed by DNA sequencing. In our study, we found 25 mutations in cases in Exon-3 and 2 mutations in controls, however, we have found only 5 mutations in exon 4 and none of the mutations were identified in exon 8. We conclude that screening of FH among Saudi population is very important to identify individuals who are prone to develop the disease.
Źródło:
Acta Biochimica Polonica; 2015, 62, 3; 559-562
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Sierpinski Carpet Five Band Antenna for Wireless Applications
Autorzy:
Khan, Imran
Devanagavi, Geetha D.
Sudhindra, K. R.
Vandana, K. M.
Pai M. M., Manohara
Ali, Tanweer
Powiązania:
https://bibliotekanauki.pl/articles/226982.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sierpinski carpet
WiMAX
x-band
current distribution
Opis:
A compact Sierpinski Carpet square fractal multiband antenna operating at 3.9 (WiMAX) /6.6 (Satellite TV) /8.1/10.7/11.8 GHz (X-band) is presented. The proposed Microstrip Patch Antenna (MSPA) consists of a Sierpinski Carpet square fractal radiator in which square slots are etched out and a tapered microstrip feed line. The Sierpinski Carpet square fractal patch modifies the current resonant path thereby making the antenna to operate at five useful bands. Impedance matching at these bands are solely achieved by using Sierpinski square slot and tapered feedline, thus eliminating the need of any external matching circuit. The dimensions of the compact antenna is and exhibits S11<-10dB bandwidth of about 4.8% (4.01-3.82 GHz), 2.1% (6.62-6.48 GHz), 2.7% (8.24-8.02 GHz), 2.1% (10.77-10.54 GHz) and 21% (12.1-11.60 GHz) with the gain of 7.57/3.91/3.77/6.74/1.33 dB at the operating frequencies 3.9/6.6/8.1/10.7 and 11.8 GHz, respectively under simulation analysis carried out by using HFSS v.13.0.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 4; 551-556
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust estimation based nonlinear higher order sliding mode control strategies for PMSG-WECS
Autorzy:
Nazir, Awais
Khan, Safdar Abbas
Khan, Malak Adnan
Alam, Zaheer
Khan, Imran
Irfan, Muhammad
Rehman, Saifur
Nowakowski, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/27311430.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
wind energy conversion systems
WECS
robust control
maximum power point tracking
MPPT
sliding mode control
SMC
super-twisting algorithm
STA
high gain observer
artificial neural network
ANN
function fitting
backstepping
śledzenie maksymalnego punktu mocy
obserwator o dużym wzmocnieniu
sztuczna sieć neuronowa
dopasowanie funkcji
system konwersji energii wiatrowej
sterowanie odporne
sterowanie ślizgowe
algorytm super skręcania
Opis:
The wind energy conversion systems (WECS) suffer from an intermittent nature of source (wind) and the resulting disparity between power generation and electricity demand. Thus, WECS are required to be operated at maximum power point (MPP). This research paper addresses a sophisticated MPP tracking (MPPT) strategy to ensure optimum (maximum) power out of the WECS despite environmental (wind) variations. This study considers a WECS (fixed pitch, 3KW, variable speed) coupled with a permanent magnet synchronous generator (PMSG) and proposes three sliding mode control (SMC) based MPPT schemes, a conventional first order SMC (FOSMC), an integral back-stepping-based SMC (IBSMC) and a super-twisting reachability-based SMC, for maximizing the power output. However, the efficacy of MPPT/control schemes rely on availability of system parameters especially, uncertain/nonlinear dynamics and aerodynamic terms, which are not commonly accessible in practice. As a remedy, an off-line artificial function-fitting neural network (ANN) based on Levenberg-Marquardt algorithm is employed to enhance the performance and robustness of MPPT/control scheme by effectively imitating the uncertain/nonlinear drift terms in the control input pathways. Furthermore, the speed and missing derivative of a generator shaft are determined using a high-gain observer (HGO). Finally, a comparison is made among the stated strategies subjected to stochastic and deterministic wind speed profiles. Extensive MATLAB/Simulink simulations assess the effectiveness of the suggested approaches.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 5; art. no. e147063
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-Step Martensitic Transformation in an Aged $Ti_{50}Ni_{15}Pd_{25}Cu_{10}$ High Temperature Shape Memory Alloys
Autorzy:
Rehman, S.
Khan, M.
Nusair Khan, A.
Ali, L.
Imran Jaffery, S.
Powiązania:
https://bibliotekanauki.pl/articles/1401938.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.30.Kf
Opis:
Multi-step martensitic transformation in an aged Ni-rich binary NiTi shape memory alloy is considered as usual behavior during transformation from austenite to martensite phase; from (austenite) B2 to R-phase and then R-phase to B19' (monoclinic). However, for equi-atomic NiTi-based quaternary high temperature shape memory alloy, two-step martensitic transformation was detected for the first time. The $Ti_{50}Ni_{15}Pd_{25}Cu_{10}$ high temperature shape memory alloys were investigated for the evolution of transformation temperatures at aging temperature of 550°C and 700°C. Aging at 550°C for 6 h resulted in significant reduction of phase transformation temperatures. During forward transformation from austenite to martensite, two-step martensitic transformation B2 → R and R → B19 (orthorhombic) was observed. By aging the alloy at 700°C for 6 h, no significant effect was found on phase transition behavior and transformation temperatures.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-125-B-127
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of the educational session on the knowledge, attitudes, and experiences of nurses towards family witnessed resuscitation
Autorzy:
Khan, Khuzaif
Shah, Bakhtayar Ali
Yousafzai, Imran Inayat
Khattak, Irfan Ullah
Powiązania:
https://bibliotekanauki.pl/articles/13925524.pdf
Data publikacji:
2023-09
Wydawca:
Towarzystwo Pomocy Doraźnej
Tematy:
Effectiveness
knowledge
attitudes
experience
nurses
family-resuscitation
Opis:
INTRODUCTION: The contemporary health care system is increasingly becoming more responsive to the needs of patients and their families. Patients and family members have priority in decision-making. The family witnessed resuscitation refers to offering the option to a family member to remain present at their loved ones during the resuscitation. Objectives: To assess the effectiveness of educational sessions on the knowledge, attitudes, and experiences of nurses about family-resuscitation witnessed. MATERIAL AND METHODS: A quasi-experimental study was conducted in Lady Reading Hospital Peshawar, Khyber Pakhtunkhwa, Pakistan. The study was carried out over six months. In total, 31 participants were recruited in the study using a convenient sampling technique. Data were collected using a standard questionnaire. Sessions were conducted to educate nurses on resuscitation witnessed by the family. RESULTS: The mean age of the participants was 29.77 years. More than half (51.6%) of the participants were male. There was a significant difference between pre- and post-intervention knowledge (P=0.000), attitude (P=0.000), and experience (P = 0.000). There was also a positive association of knowledge with educational level (P=0.02), experience (P=0.001), and job position (P=0.001). Similarly, the attitude of the participants was also associated with experience (P=0.000) and education status (P=0.002). Additionally, the experience of the participants was also associated with education status (P=0.01) and Job Position (P=0.000). CONCLUSIONS: Educational interventions have a significant effect on the knowledge, attitude and experiences of nurses toward family witness resuscitation.
Źródło:
Critical Care Innovations; 2023, 6, 3; 13-20
2545-2533
Pojawia się w:
Critical Care Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorbent filters for removing polycyclic aromatic hydrocarbons from the atmosphere
Autorzy:
Khan, Abdul Muqeet
Imran, Muhammad
Hashmi, Abu Saeed
Shehzad, Wasim
Abbas, Mateen
Powiązania:
https://bibliotekanauki.pl/articles/24201031.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
polycyclic aromatic hydrocarbons
PAHs
electrostatic precipitation
adsorption
Pakistan
wielopierścieniowe węglowodory aromatyczne
WWA
filtr elektrostatyczny
adsorpcja
Opis:
Indoor activities involving cooking and warming, outdoor sources, smoking, and candle and in-cense burning may introduce a massive portion of polycyclic fragrant hydrocarbons. These are well known for their mutagenicity and carcinogenicity and are omnipresent in urban situations as a result of the combustion of fuel. Due to small particle size, penetration has been suspected to be one major source of indoor polycyclic aromatic hydrocarbons. In the current study, the manufacturing of three types of filters (electrostatic charge-based, pomegranate peel biochar-based, and birds’ feathers-based) was carried out. Their efficiency was tested to remove molecules bounded PAHs and also other geno-toxic compounds associated with these particles. The electrostatic filter was more efficient (27.42%) than pomegranate peel-based and birds’ feathers-based filters (13.86% and 8.32%, respectively). The carcinogenetic effects of PAHs emitted from outdoor and indoor pollutants can be reduced using these kinds of filters.
Źródło:
Environment Protection Engineering; 2023, 49, 2; 19--27
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-11 z 11

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