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911.
Sleep and Biological Rhythms - This study aims to assess the latent dimensional structure of sleep quality as measured by seven components of the Pittsburgh Sleep Quality Index (PSQI) and evaluate... 相似文献
912.
Reduan Abdullah Gokula Kumar Appalanaido Syadwa Abdul Shukor Hafiz M. Zin Mohd Zahri Abd Aziz Norhafizah Ishak 《Reports of Practical Oncology and Radiotherapy》2021,26(6):892
BackgroundThis dosimetric study compared lateral wedge with medial only cardiac shielding (LEMONADE) technique, for left chest wall (LCW) irradiation against three other commonly used techniques.Materials and methodsDosimetric parameters of 22 consecutive LBC patients treated using the P1 (LEMONADE technique) were compared with 3 other virtually reconstructed plans : no cardiac shielding with paired wedges; P2 (paired wedges and medial only Y-direction shielding) and P3 (paired wedges and bilateral Y-direction shielding).ResultsP1 showed better target volume (TV) coverage with the mean 90% isodose coverage of 85.59% ± 5.44 compared to 78.90% ± 8.59 and 74.22% ± 9.50 for P2 and P3, respectively. Compared to no cardiac shielding, for a 4.65% drop in TV coverage the V26Gy of heart dropped from 6.68% to a negligible 0.85% for P1. TV receiving < 30Gy is also significantly lesser for P1 compared to P2 and P3 (5.42% vs 10.64% and 15.8%), whilst there is a small difference of 2.75% between no cardiac shielding and P1.ConclusionWith the improvement in BC survival rate, cardiac toxicity associated with adjuvant irradiation for LBC is a major concern. P1 (LEMONADE) technique has a good compromise between cardiac sparing and target coverage and should suffice for most LCW irradiations. Furthermore, the LEMONADE technique is a simple, reproducible and involves fast planning for cardiac sparing, which is ideal for under-resourced departments with heavy workload. 相似文献
913.
Hammam Abdurabu Thabit Abd Khamim Ismail Norlaili A. Kabir Mohammad Hasan Abu Mhareb Abdulmajeed Muidh Al Mutairi Abdullah Bafaqeer Yasser Alajerami Mohammad Ibrahim Abualsayyed 《Luminescence》2024,39(2):e4683
This work explores the thermoluminescence (TL) and photoluminescence (PL) properties of Ag/Y co-doped zinc oxide (ZnO) nanophosphor. The proposed dosimeter was prepared by the coprecipitation method and sintered at temperatures from 400°C to 1000°C in an air atmosphere. Raman spectroscopy was studied to investigate the structural features of this composition. The new proposed dosimeter revealed two peaks at 150°C and 175°C with a small shoulder at high temperature (225°C). The PL spectrum showed strong green emissions between 500 to 550 nm. The Raman spectrum showed many bands related to the interaction between ZnO, silver (Ag), and yttrium oxide (Y2O3). The rising sintering temperature enhanced the TL glow curve intensity. The Ag/Y co-doped ZnO nanophosphor showed an excellent linearity index within a dose from 1 to 4 Gy. The minimum detectable dose (MDD) of the Ag/Y co-doped ZnO nanopowder (pellets) equaled 0.518 mGy. The main TL properties were achieved in this work as follows: thermal fading (37% after 45 days at 1 and 4 Gy), optical fading (53% after 1 h and 68% after 6 h by exposure to sunlight), effective atomic number (27.6), and energy response (flat behavior from 0.1 to 1.3 MeV). Finally, the proposed material shows promising results nominated to be used for radiation measurements. 相似文献
914.
Toshihiro Yamada Toshinori Okuda Makmom Abdullah Muhamad Awang Akio Furukawa 《Oecologia》2000,125(4):476-482
On a monoaxial erect stem of trees with continuous leafing, the older leaves would be quickly shaded by newer (upper) leaves if the trees did not have any compensating mechanisms to avoid self-shading. We hypothesized that the dynamic adjustment of leaf deployment, by regulating the patterns of leaf growth and by changing leaf orientation as leaves age, is a compensating mechanism. To verify this hypothesis, we analyzed leaf development and crown structure of a Far Eastern tropical pioneer tree species, Macaranga gigantea (Rub. f. et Toll.) M.A., which unfolds huge leaves directly on a monoaxial stem with a short leafing interval. Petioles required more than 90 days for full elongation and the petiole angle (the angle between the petiole axis and the vertical) increased over time. Thus, a series of leaves on a stem progressively increased in petiole length and petiole angle from the youngest to the oldest leaves. This is beneficial because it decreases the degree of self-shading within a crown. A simulation suggested that an average crown for the M. gigantea seedlings, which was constructed using empirically determined morphometric data cannot entirely eliminate self-shading within the crown. But an average crown had a lower degree of self-shading, with less dry mass allocation to the petiole than simulated crowns that were identical to the average crown in all but one respect: they had constant petiole lengths or petiole angles. We conclude that M. gigantea seedlings reduce self-shading by regulating elongation of the petiole and changes in the petiole angle with increasing leaf age. 相似文献
915.
Lobna Saad Mohammed Abd Elmeged Abdullah A.A. Alghamdi 《Saudi Journal of Biological Sciences》2022,29(1):140-147
Hammour fish (grouper fish) are known to be of great nutritional value for human consumption, as their protein has a high biological value and contains all the essential amino acids. Grouper fish are also a good source of minerals, vitamins, and fats that contain essential fatty acids. Thus, the current study aims to know the effect of different proportion of hummer fish on biochemical and histopathological changes of hyperglycemic rats. Twenty-four (24) Sprague Dawley-strain male albino rats, which weighed 150 ± 10 g, were divided into four groups. One group served as the negative control (normal), while the others were rendered diabetic using alloxan. One of the diabetic groups was considered the positive control and fed a standard diet, whereas the remaining two groups were fed with a 20% and 25% hammour fish diet for 28 days. At the end of the experiment, blood samples were taken from all the rats, and their organs were removed and subjected to biochemical analysis. The results indicated that the group fed with the 25% hammour fish diet exhibited significantly lower levels of liver, kidney, and heart damage, along with lower levels of serum glucose, total cholesterol, triglycerides, LDL, GOT, GPT and ALP, as compared to the positive control. The urea and creatinine levels were significantly higher for the rats that were fed the 20% hammour fish diet than for those in the positive control. The histopathological study of the heart showed a slight improvement of the heart tissues with the increase of hammour fish intake compare to the positive control, while kidney of rat from group 4, which were fed 25% hammour fish, showed granularity of epithelial lining glomerular tufts. 相似文献
916.
Lore Pottie Christin S. Adamo Aude Beyens Steffen Lütke Piyanoot Tapaneeyaphan Adelbert De Clercq Phil L. Salmon Riet De Rycke Alper Gezdirici Elif Yilmaz Gulec Naz Khan Jill E. Urquhart William G. Newman Kay Metcalfe Stephanie Efthymiou Reza Maroofian Najwa Anwar Shazia Maqbool Fatima Rahman Ikhlass Altweijri Monerah Alsaleh Sawsan Mohamed Abdullah Mohammad Al-Owain Mais Hashem Henry Houlden Fowzan S. Alkuraya Patrick Sips Gerhard Sengle Bert Callewaert 《American journal of human genetics》2021,108(12):2386-2388
917.
Abdullah Hamadi Rashid Mir Ali Mahzari Abdulrahim Hakami Reema Almotairi Gasim Dobie Fawaz Hamdi Mohammed Hassan Nahari Razan Alhefzi Mohammed Alasseiri Nora Y. Hakami Hadeel Al Sadoun Osama M. Al-Amer Jameel Barnawi Hassan A. Madkhali 《Current issues in molecular biology》2022,44(6)
Recent studies have indicated that microRNA and VEGF are considered to be genetic modifiers and are associated with elevated levels of fetal haemoglobin HbF, and thus they reduce the clinical impact of sickle haemoglobin (HbS) patients. This cross-sectional study was performed on clinical confirmed subjects of SCD cases. miR-423-rs6505162 C>T and VEGF-2578 C>A genotyping was conducted by ARMS-PCR in SCD and healthy controls. A strong clinical significance was reported while comparing the association of miR-423 C>T genotypes between SCD patients and controls (p = 0.031). The microRNA-423 AA genotype was associated with an increased severity of SCD in codominant model with odd ratio (OR = 2.36, 95% CI, (1.15–4.84), p = 0.018) and similarly a significant association was observed in recessive inheritance model for microRNA-423 AA vs (CC+CA) genotypes (OR = 2.19, 95% CI, (1.32–3.62), p < 0.002). The A allele was associated with SCD severity (OR = 1.57, 95% CI, (1.13–2.19), p < 0.007). The distribution of VEGF-2578 C>A genotypes between SCD patients and healthy controls was significant (p < 0.013). Our results indicated that in the codominant model, the VEGF-2578-CA genotype was strongly associated with increased SCD severity with OR = 2.56, 95% CI, (1.36–4.82), p < 0.003. The higher expression of HbA1 (65.9%), HbA2 (4.40%), was reported in SCD patients carrying miR-423-AA genotype than miR-423 CA genotype in SCD patients carrying miR-423 CA genotype HbA1 (59.98%), HbA2 (3.74%) whereas SCD patients carrying miR-423 CA genotype has higher expression of HbF (0.98%) and HbS (38.1%) than in the patients carrying AA genotype HbF (0.60%), HbS (36.1%). ARMS-PCR has been proven to be rapid, inexpensive and is highly applicable to gene mutation screening in laboratories and clinical practices. This research highlights the significance of elucidating genetic determinants that play roles in the amelioration of the HbF levels that is used as an indicator of severity of clinical complications of the monogenic disease. Further well-designed studies with larger sample sizes are necessary to confirm our findings. 相似文献
918.
919.
Zalina Bashir Maizah M. Abdullah Mazlan Abd. Ghaffar Mohd Uzair Rusli 《Journal of fish biology》2020,97(6):1876-1879
This study reports the discovery of the exclusive predation of sea turtle hatchlings by several juvenile blacktip reef sharks (Carcharhinus melanopterus) in Chagar Hutang bay on Redang Island, Malaysia, in the South China Sea. Three dead specimens of C. melanopterus were retrieved from ghost nets, and the entire digestive tracts of these sharks solely contained the partially digested bodies of sea turtle hatchlings, with no evidence of the remains of any other prey. Thus, juvenile C. melanopterus may opportunistically feed primarily on turtle hatchlings during times when hatchling abundance is high. 相似文献
920.
Devanthiran Letchumanan Nuratiqah Mohamad Norpi Zamros Yuzadi Mohd Yusof Ishak Abdul Razak Noor Hayaty Abu Kasim Nurrul Ashikin Abdullah Sheila Rani Ramalingam Habibah Yacob Datu Mohd Amyril Abduludin Lily Laura Azmi Nurul Asniza Abas Yaw Siew Lian Zainab Shamdol Fatimah Arusah Ishak Noor Aliyah Ismail Khairiyah Abd Muttalib 《Gerodontology》2020,37(4):332-341