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The Gaussian computational chemistry software package was employed to investigate the molecular structure and energetics of benzothiazole, a compound known for its anti-tumor properties. Density functional theory (DFT) calculations were conducted using the Becke, 3-parameter, Lee-Yang-Parr (B3LYP) method, coupled with the LanL2DZ basis set. Molecular structure optimization was carried out to determine the most stable configurations of the benzothiazole compound. Furthermore, thorough analyses of molecular orbital energies, molecular properties, and molecular electrostatic potential surface maps were performed on the optimized molecular system. Our current research suggests that the compound 2-(4-aminophenyl) benzothiazole, containing benzothiazole, maybe a potential drug candidate for free radical species on cells due to its anti-cancer properties.

With each passing year a new record for global emissions is set (1) and policymakers and utility companies must embrace all avenues for decarbonization of energy. Universal adoption of electrification for every building and home by 2050 (2) is not practical, a balance must be struck between an equitable transition to cleaner energy supplies and ensuring uninterrupted, safe delivery of energy to utility customers. Renewable Natual Gas (RNG) is a molecule-for-molecule replacement of traditional geological natural gas with tangible life cycle emissions reductions. California continues to lead the way, initially starting with the low carbon fuel standard (LCFS) which aimed to reduce the carbon intensity of transportation fuel, and subsequently, Senate Bill 1440, which established RNG procurement goals including 12% RNG by 2030 (3). Other States are starting to adopt similar changes such as Oregon’s Senate Bill 98 and Colorado’s Senate Bill 21-264. As utilities attempt to transition the energy network, they must never compromise system safety and reliability. Recognizing that raw biogas has dangerous levels of contaminants of concern (COC) and must be conditioned to pipeline quality, its important utility companies better understand the methods with which methane is extracted and the testing protocols used to confirm performance. This paper highlights the equipment, processes, and testing regime National Grid and its partner the New York City Department of Environmental Protection (NYC DEP) deployed as part of its Newtown Creek RNG project, which successfully began injecting RNG into the NYC gas distribution network in October 2022.

Age estimations process is not standardized worldwide. However, there is a wide agreement about the most suitable methods currently available. Up until now, the procedure of creating expert reports and to implement quality assurance in age estimation are variable. Aim: The aim of this paper was to examine expert age estimation reports from around the world and identify the similarities and shortcomings present, which will help in providing recommendations to improve the reporting to reach standardization in expert age estimation reports. Methods and Material: A questionnaire was developed to explore whether there is a universal consensus in writing age estimation reports. Countries participated in the survey were: Afghanistan, Australia, France, Indonesia, Italy, New Zealand, Norway, Paraguay, Saudi Arabia, Spain, Switzerland, United Arab Emirates, United Kingdom, and the United States of America. Areas investigated by the survey included: Information about the individual in question and the entity requesting the assessment, if age interval is given along with if statistics were described in the report, if population reference data are used and reported and finally if the format of the report is standardized within each country. Results: The results of this survey suggest that there is a high degree of individual variation in age estimation reports, sometimes even within the same country. While the majority of participants report the main findings, some important information is still missing. The statistical information remains extremely varied. Conclusion: Although a resolution is not obvious, it is hoped that this study will promote further research and discussion on reporting age estimation. International guidelines on quality assurance in age estimation reports are urgently needed. Information to be reported should be specified on an international level and the exact report format to be used could be left to the national societies.

Background: C-type natriuretic peptide (CNP) was isolated from porcine brain and is a 22-amino acid peptide which belongs to the natriuretic peptide (NP) family. Even though this peptide shares structural similarity to other endogenous NPs including atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) its receptor selectivity is different from other NPs. The present study was undertaken to investigate the expression of C-type natriuretic peptide (CNP) and its specific guanylyl cyclase (GC)-coupled receptor in the granulosa cells of the pig ovarian follicle. Results: Specific 125I-[Tyr0]-CNP(1-22) binding sites were localized in the granulosa cell layer of the ovarian follicle with an apparent dissociation constant (Kd>) and a maximal binding capacity (Bmax) of 1.41±0.39 nM and 2.75±0.65 fmol/mm2 respectively. Binding of 125I-[Tyr0]-CNP(1-22) to these sites was also prevented by atrial natriuretic peptide (ANP(1-28)), brain natriuretic peptide (BNP(1-26)) and des[Gln18,Ser19,Gly20, Leu21,Gly22] ANP(4-23) (C-ANP). Production of 3’,5’-cyclic guanosine monophosphate (cGMP) by particulate GC in the granulosa cell membranes was stimulated by natriuretic peptides (NPs) with a rank order of potency of CNP(1-22)>>BNP(1-26)>ANP(1-28). HS-142-1, a selective antagonist of the two recognized GC-coupled NPRs, inhibited CNP(1-22)-stimulated cGMP production in granulosa cell membranes in a dose-dependent manner. Also mRNAs for all three recognized NPRs were detected in granulosa cells using reverse transcriptase-polymerase chain reaction (RT-PCR). Serial dilution curves of granulosa cell extracts were parallel to the standard curve of synthetic CNP. Conclusion: These results indicate that CNP and its specific receptor are expressed in the granulosa cells of the pig ovary, and suggest that CNP may be a local autocrine and/or paracrine regulator via activation of its specific GC-coupled receptor, NPR-B.

Introduction: One of the essential requirements for efficient oral and maxillofacial surgeon is comprehensive knowledge in anatomy of head and neck regions. Authors believe that asking students to draw anatomical sketches will assist them to improve their imaginary memory for human anatomy. However, drawing, as learning aid in anatomy, has not been given enough attention as a learning aid for human anatomy. Aim of the study: To determine dental students’ level of appreciation to drawings as practical learning aid in human anatomy. Materials and methods: Seventy nine first year dental students in Ibn Sina University for Medical and Pharmaceutical Sciences College of Dentistry for the academic year 2016-2017, were requested to complete a questionnaire. The questions were mostly related to the importance of drawing in anatomy and its relation to Anatomy education. The participation in the questionnaire was optional. Results: This study showed highly significant relationship between the ability to understand anatomy subject and the importance of drawing (P=0.006). It also showed highly significant relationship between the importance of drawings and giving clinical examples during lectures or anatomical labs (P=0.006). Furthermore, the results showed no significant relationship between the importance of drawings and the load of anatomical material, introduced in anatomical lectures and labs (P=0.639). Conclusion: Anatomical drawings, from first year dental students’ perspective, are a useful learning tool and can relate to different aspects of proper education of human anatomy. Drawings can be implemented as practical tool in human anatomy curriculum for undergraduate dental education.

Sojourn to high altitude may affect various human systems if proper acclimatization not followed. If acclimatization failed, sojourners may suffer with high altitude sickness such as acute mountain sickness (AMS), high altitude pulmonary edema (HAPE) and high altitude cerebral edema (HACE). Although a sojourner’s tolerance to high altitude hypoxia varies according to differences in physiology and physical conditioning. Acute mountain sickness may cause headache, insomnia, dizziness, nausea, vomiting and fatigue. While HACE is more serious stage where brain swelling occurs and it is potentially fatal. A sojourner with HACE may experience confusion, amnesia, delusions, and loss of consciousness. Staying in high altitude (above 9000 feet) environment poses low oxygen supply (hypobaric hypoxia) to the different body organs including brain.

Covid-19 infection is caused by the coronavirus SARS-CoV-2. This has resulted in the present pandemic from which thousands of people have died including many front-line health care workers. Of the surgeons who have died from covid-19 it would appear that otorhinolaryngology surgeons have made the largest sacrifice (Figure 1) [1].

Necrotizing fasciitis is a quickly progressing soft tissue infection that can be described with diffuse necrosis of subcutaneous tissue and superficial fascia. The cause of this can be infectious process of odontogenic origin, most commonly caused by mixed gram+ and gram- , aerobic and anaerobic microorganisms that are found in patients that are predisposed to infections. In a case of undiagnosed illness, there is a possibility of life threatening complications. This case analysis introduces the diagnostic criteria of the disease and treatment plan, encouraging doctors to devote more attention to prevention of infections. 

Research into regulation of the differentiation of stem cells is critical to understanding early developmental decisions and later development growth. The transcription factor ARID3A previously was shown to be critical for trophectoderm and hematopoetic development. Expression of ARID3A increases during embryonic differentiation, but the underlying reason remained unclear. Here we show that Arid3a null embryonic stem (ES) cells maintain an undifferentiated gene expression pattern and form teratomas in immune-compromised mice. However, Arid3a null ES cells differentiated in vitro into embryoid bodies (EBs) significantly faster than control ES cells, and the majority forming large cystic embryoid EBs. Analysis of gene expression during this transition indicated that Arid3a nulls differentiated spontaneously into mesoderm and neuroectoderm lineages. While young ARID3A-deficient mice showed no gross tissue morphology, proliferative and structural abnormalities were observed in the kidneys of older null mice. Together these data suggest that ARID3A is not only required hematopoiesis, but is critical for early mesoderm differentiation.

Significance: Due to the limited number of reported cases little is known about the characteristics of unilateral retinitis pigmentosa. Information from additional case reports can aid in learning more about the condition. We report a case of retinitis pigmentosa that has remained unilateral for 28 years and review the available literature. Case Report: A 40-year-old Caucasian female presented for an opinion as to the cause of her vision loss. Fundus autofluorescence demonstrated hypoautofluorescence in the midperipheral retina and a hyperautofluorescent ring surrounding the area of preserved photoreceptors in the macula. Optical coherence tomography showed disruption of the ellipsoid zone and the external limiting membrane. Electroretinography (ERG) showed severely reduced rod and cone function monocularly. Discussion: Retinitis pigmentosa is typically bilateral and symmetric. Unilateral retinitis pigmentosa is a rare condition that manifests with only one eye having changes typical of retinitis pigmentosa. The unaffected eye can have no signs of retinitis pigmentosa and must have a normal ERG after long-term follow up. It is critical to rule out inflammatory, traumatic, toxic, and cancer associated retinopathy that can present with retinal pigmentary changes. Unilateral retinitis pigmentosa generally remains unilateral, but long-term follow up with ERG is important. There is currently no treatment that can stop the process of retinitis pigmentosa, but gene therapy shows promise.