Importance and satisfaction of service quality offered by economics and administrative sciences faculty (QafQaz University) from the perception of students

The aim of this study is to evaluate the student`s satisfaction with the service quality and assess importance of different attributes in terms of student`s perception in the Economics and Administration faculty of the Qafqaz University. To perform study, survey method applied to collect the data and number of received valid questionnaires were 266. Descriptive analysis used to identify profile of respondents, also find satisfaction and importance degree for each attributes. To evaluate differences between groups, built association between variables, find relation between variables also to answer to the research hypothesis inferential analysis applied. The result showed that generally, the students are satisfied with service quality of Economics and Administration faculty and all attributes are important from the perception of student`s. The findings of study are useful in order to develop service quality in education industry.info:eu-repo/semantics/publishedVersio

Adsorption Study of Highly Selective Adsorbents Obtained from Navbahor Bentonite

Silicon adsorbents (YuKA) from navbahor bentonite of Navoi region was carried out with the participation of various organic compounds (templates) according to the "Zol-gel" technology. For this, crystals were formed by adding hexamethylenediamine and alcohol fraction as a template to liquid glass (29% , 9% , 62% )  After the completion of the crystallization process, the solid phase was separated from the solution using a Buchner funnel and dried in a SShU-m1 drying cabinet to 120°C and fired at 550°C in a SNOL 30/1100 muffle furnace for 8 hours to remove the template . Navbahor bentonite was crystallized for 8-9 hours and the elements and oxides content (mass, %) of Yuka samples were analyzed by X-ray fluorescence and Bentonite's derivatographic curves

Adsorption Study of Highly Selective Adsorbents Obtained From Navbahor Bentonite

Silicon adsorbents (YuKA) from navbahor bentonite of Navoi region was carried out with the participation of various organic compounds (templates) according to the "Zol-gel" technology. For this, crystals were formed by adding hexamethylenediamine and alcohol fraction as a template to liquid glass (29% , 9% , 62% ) After the completion of the crystallization process, the solid phase was separated from the solution using a Buchner funnel and dried in a SShU-m1 drying cabinet to 120°C and fired at 550°C in a SNOL 30/1100 muffle furnace for 8 hours to remove the template . Navbahor bentonite was crystallized for 8-9 hours and the elements and oxides content (mass, %) of Yuka samples were analyzed by X-ray fluorescence and Bentonite's derivatographic curves

COMPLEXITY REDUCTION OF CYCLOSTATIONARY SENSING TECHNIQUE USING IMPROVED HYBRID SENSING METHOD

In cognitive radio system, the spectrum sensing has a major challenge in needing a sensing method, which has a high detection capability with reduced complexity. In this paper, a low-cost hybrid spectrum sensing method with an optimized detection performance based on energy and cyclostationary detectors is proposed. The method is designed such that at high signal-to-noise ratio SNR values, energy detector is used alone to perform the detection. At low SNR values, cyclostationary detector with reduced complexity may be employed to support the accurate detection. The complexity reduction is done in two ways: through reducing the number of sensing samples used in the autocorrelation process in the time domain and through using the Sliding Discrete Fourier Transform (SDFT) instead of the Fast Fourier Transform (FFT). To evaluate the performance, two versions of the proposed hybrid method are implemented, one with the FFT and the other with the SDFT. The proposed method is simulated for cooperative and non-cooperative scenarios and investigated under a multipath fading channel. Obtained results are evaluated by comparing them with other methods including: cyclostationary feature detection (CFD), energy detector and traditional hybrid. The simulation results show that the proposed method with the FFT and the SDFT successfully reduced the complexity by 20% and 40% respectively, when 60 sensing samples are used with an acceptable degradation in the detection performance. For instance, when Eb/N0 is 0 dB , the probability of the detection of Pd is decreased by 20 % and 10% by the proposed method with the FFT and the SDFT respectively, as compared with the hybrid method existing in the literature

Novel palladium(II) complex derived from mixed ligands of dithizone and triphenylphosphine synthesis, characterization, crystal structure, and DFT study

ABSTRACT. A novel distorted square-planar palladium(II) complex of the type [Pd(Hdz)(PPh3)Cl], where (Hdz = dithizone mono deprotonate and PPh3 = triphenylphosphine), was synthesized in dichloromethane reactions between PdCl2 and a mixture of Hdz and PPh3. The new Pd(II) complex has been identified by FT-IR, electronic spectra, DFT calculations, molar conductivity, and single-crystal X-ray diffraction. An X-ray diffraction study revealed the structure of this complex, indicating distorted square planar coordination geometry around the Pd(II) ion by N, S, P, and Cl donor atoms. XRD analysis has also shown that the Pd(II) complex contains one five-membered ring formed by the coordination of the Hdz ligand through the nitrogen and sulfur atoms to the palladium metal center. To comprehend the strength of nucleophilic and electrophilic attack between the ligands and metal ions, the natural bond orbital (NBO) was used. Finally, density functional theory (DFT) was used to show the molecular reactivity and stability of the ligands and palladium complex.   KEY WORDS: Palladium(II), Dithizone mono deprotonated, Distorted square planar geometry, NBO analysis, DFT calculations Bull. Chem. Soc. Ethiop. 2022, 36(3), 617-626.                                                               \ DOI: https://dx.doi.org/10.4314/bcse.v36i3.11                                                     &nbsp

Wild Allium species (Alliaceae) used in folk medicine of Tajikistan and Uzbekistan

BACKGROUND: Hitherto available sources from literature mentioned several wild growing Allium species as "edible" or "medicinally used" but without any further specification. METHODS: New data were gained during recent research missions: Allium plants were collected and shown to the local population which was asked for names and usage of these plants. RESULTS: Information was collected about current medical applications of sixteen wild species, nine of which belong to different sections of Allium subgenus Melanocrommyum. These plants are used against headache, cold, and stomach problems, and are mostly applied fresh or after boiling. CONCLUSION: Close taxonomic relatives of the common onion were used similar to cultivated onion species, but medical use like garlic was mostly reported for species taxonomically not related to garlic

Preferential Habitat of Orange Footed Scrubfowl (Megapodius Reindwardt) at Nature Tourism Park of Mount Tunak, Lombok Tengah Regency, Nusa Tenggara Barat Province

Orange Footed Scrubfowl (Megapodius reindwart Dumont 1823) is classified as protected bird based on the Preservation of Plant and Animal Species of Ministry of Enviromental and Forestry Decree No. 92/2018. As a natural park, TWA of Gunung Tunak serves as a natural conservation area (NCA) which has a basic function as a conservation area designated as a recreation area and nature tourism. Associated with its function then TWA of Gunung Tunak has an important role in supporting the conservation of wild animals especially Orange Footed Scrubfowl and the implementation of recreational activities and natural tourism in a sustainable manner. The objectives of this study were to analysis the preferential habitats of Orange Footed Scrubfowl. Based on the results of multiple linear regression analysis of stepwise method, it can be known that dominant factors to the frequency of presence of Orange Footed Scrubfowl in a selected habitat are the number of predators, the distance from water source, soil texture, and altitude of place with the equation Y = 3.390.96 + 2.28X11 + 0.00084X5 - 0.0117X10 - 0.0034X3. Based on the results of preference index analysis with Neu method, it can be seen that the preferred area of Orange Footed Scrubfowl is only in Block I (w ≥ 1) namely the forest area near Teluk Ujung Coast. Based on the place altitude, the existence of the mound of nest from the sea surface, the Orange Footed Scrubfowl prefer the area at an altitude of 0-25 m above sea level

Normosmic idiopathic hypogonadotropic hypogonadism due to a novel GNRH1 variant in two siblings.

SUMMARY: Hypogonadotropic hypogonadism is characterised by insufficient secretion of pituitary gonadotropins resulting in delayed puberty, anovulation and azoospermia. When hypogonadotropic hypogonadism occurs in the absence of structural or functional lesions of the hypothalamic or pituitary gland, the hypogonadism is defined as idiopathic hypogonadotropic hypogonadism (IHH). This is a rare genetic disorder caused by a defect in the secretion of gonadotropin releasing hormone (GNRH) by the hypothalamus or a defect in the action of GNRH on the pituitary gland. Up to 50% of IHH cases have identifiable pathogenic variants in the currently known genes. Pathogenic variants in the GNRHR gene encoding the GNRH receptor are a relatively common cause of normosmic IHH, but reports of pathogenic variants in GNRH1 encoding GNRH are exceedingly rare. We present a case of two siblings born to consanguineous parents who were found to have normosmic idiopathic hypogonadotropic hypogonadism due to homozygosity of a novel loss-of function variant in GNRH1. Case 1 is a male who presented at the age of 17 years with delayed puberty and under-virilised genitalia. Case 2 is a female who presented at the age of 16 years with delayed puberty and primary amenorrhea. LEARNING POINTS: IHH is a genetically heterogeneous disorder which can be caused by pathogenic variants affecting proteins involved in the pulsatile gonadotropin-releasing hormone release, action, or both. Currently known genetic defects account for up to 50% of all IHH cases. GNRH1 pathogenic variants are a rare cause of normosmic IHH. IHH is associated with a wide spectrum of clinical manifestations. IHH can be challenging to diagnose, particularly when attempting to differentiate it from constitutional delay of puberty. Early diagnosis and gonadotrophin therapy can prevent negative physical sequelae and mitigate psychological distress with the restoration of puberty and fertility in affected individuals

Simplifying the clinical classification of polymerase gamma (POLG) disease based on age of onset; studies using a cohort of 155 cases

Background: Variants in POLG are one of the most common causes of inherited mitochondrial disease. Phenotypic classification of POLG disease has evolved haphazardly making it complicated and difficult to implement in everyday clinical practise. The aim of our study was to simplify the classification and facilitate better clinical recognition. / Methods: A multinational, retrospective study using data from 155 patients with POLG variants recruited from seven European countries. / Results: We describe the spectrum of clinical features associated with POLG variants in the largest known cohort of patients. While clinical features clearly form a continuum, stratifying patients simply according to age of onset—onset prior to age 12 years; onset between 12 and 40 years and onset after the age of 40 years, permitted us to identify clear phenotypic and prognostic differences. Prior to 12 years of age, liver involvement (87%), seizures (84%), and feeding difficulties (84%) were the major features. For those with onset between 12 and 40 years, ataxia (90%), peripheral neuropathy (84%), and seizures (71%) predominated, while for those with onset over 40 years, ptosis (95%), progressive external ophthalmoplegia (89%), and ataxia (58%) were the major clinical features. The earlier the onset the worse the prognosis. Patients with epilepsy and those with compound heterozygous variants carried significantly worse prognosis. / Conclusion: Based on our data, we propose a simplified POLG disease classification, which can be used to guide diagnostic investigations and predict disease course