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WSA-Supplements and Proper Classes
No full textIn this paper, we introduce the concept of wsa-supplements and investigate the objects of the class of short exact sequences determined by wsa-supplement submodules, where a submodule U of a module M is called a wsa-supplement in M if there is a submodule V of M with U + V = M and U boolean AND V is weakly semiartinian. We prove that a module M is weakly semiartinian if and only if every submodule of M is a wsa-supplement in M. We introduce CC-rings as a generalization of C-rings and show that a ring is a right CC-ring if and only if every singular right module has a crumbling submodule. The class of all short exact sequences determined by wsa-supplement submodules is shown to be a proper class which is both injectively and co-injectively generated. We investigate the homological objects of this proper class along with its relation to CC-rings
Lumen reconstruction with magnetic compression anastomosis technique in a patient with complete esophageal stricture
No full textBackground: Complete esophageal obstruction (CEO) is a rare condition of which treatment options are challenging. Surgery is the main treatment with high morbidity and mortality rates. Magnetic compression anastomosis (MCA) is a novel technique developed to restore lumen patency in gastrointestinal and biliary tracts. However, MCA experience is limited in respect of esophageal strictures. Case Report: We present a 26-year-old patient having CEO. Magnets are inserted endoscopically to both sides of the obstructed area via oral and retrograde (through the gastrostomy tract) route. On day 8, magnets stuck together and were removed endoscopically through the oral route. Subsequently, sessions of balloon dilatations and triamcinolone injection were performed. The patient’s complaint of aphagia resolved after the treatment process. Conclusion: In conclusion, MCA is an alternative technique that can be used to restore lumen patency in esophageal strictures and also avoids complications of surgical interventions. (Acta gastroenterol. belg., 2022, 85, 393-395). © 2022, Universa Press. All rights reserved
Oküler Demodex Kolonizasyonu ile Konjonktival Flora İlişkisinin Araştırılması
No full textObjective: this study aimed to determine whether ocular Demodex colonization leads to changes in the conjunctival flora in healthy middle-aged individuals. Methods: This study included 70 patients who applied to an ophthalmology clinic with a complaints of presbyopia. Two eyelash specimens from the lower eyelids of both eyes were obtained from each individual. In eyelash specimens were examined for Demodex spp. by direct wet smearing under microscopy. Conjunctival culture samples were cultivated on blood agar, eosin methylene blue and chocolate agar. Results: In the 38.5% of the individuals, Demodex spp. mites were found in the eyelashes, out of which 11.4% were Demodex brevis and 27.1% Demodex folliculorum. Bacterial growth was observed in 82.9% of the samples examined. The most frequently detected bacterium was Staphylococcus epidermidis (57%). Conclusion: Although Demodex spp. infestation has been shown to be related to diseases on ocular surface of eyes such as pterygium, xerophthalmia and chalazion, we did not observe that it induces changes in ocular surface flora in healthy adults. © 2022 Turkish Society for Parasitology
Power Muirhead mean in spherical normal fuzzy environment and its applications to multi-attribute decision-making Spherical normal fuzzy power Muirhead mean
No full textThis study aims to propose the power Muirhead mean (PMM) operator in the spherical normal fuzzy sets (SNoFS) environment to solve multiple attribute decision-making problems. Spherical normal fuzzy sets better characterize real-world problems. On the other hand, the Muirhead mean (MM) considers the relationship between any number of criteria of the operator. Power aggregation (PA) reduces the negative impact of excessively high or excessively low values on aggregation results. This article proposes two new aggregation methods: spherical normal fuzzy power Muirhead mean (SNoFPMM) and spherical normal fuzzy weighted power Muirhead mean (SNoFWPMM). Also, these operators produce effective results in terms of their suitability to real-world problems and the relationship between their criteria. The proposed operators are applied to solve the problems in choosing the ideal mask for the COVID-19 outbreak and investment company selection. However, uncertainty about the effects of COVID-19 complicates the decision-making process. Spherical normal fuzzy sets can handle both real-world problems and situations involving uncertainty. Our approach has been compared with other methods in the literature. The superior aspects and applicability of our strategy are also mentioned
LC/MS-MS Analyses and in vitro anticancer activity of Tourneuxia variifolia extracts
No full textSeveral Saharan plants, despite their abundance of natural compounds, have received little attention. In this study, the chemical composition of polar extracts of Tourneuxia variifolia Coss. (Asteraceae), an endemic species to Algerian Sahara, was investigated and their anticancer activity was evaluated in vitro. The phytoconstituents of both ethyl acetate (EtOAc) and n-butanol (n-BuOH) extracts were screened using LC/MS-MS technique. The anticancer activity of the above extracts was measured against human cervical adenocarcinoma (HeLa) cell line. The LC/MS-MS analyses results revealed that twenty-seven phytochemicals in EtOAc extract and twenty-three in n-BuOH extract were identified and quantified from which isoquercetin and astragalin were the most present. Moreover; the EtOAc extract was found to have a strong anticancer activity (IC50: 46.797 +/- 0.060 mu g/mL). These findings identified T. variifolia as a potential plant exhibiting anticancer properties.Algerian Ministry of Higher Education and Scientific Research (MESRS); Algerian PRFU program [B00L01UN250120180002]This work was supported by the Algerian Ministry of Higher Education and Scientific Research (MESRS) and the Algerian PRFU (B00L01UN250120180002) program
DETERMINATION OF ANTIBACTERIAL EFFICIENCIES OF COMMERCIAL PLANT ESSENTIAL OILS AND TANNINS AGAINST PLANT PATHOGENIC BACTERIA
No full textKahramanmaras region is suitable for pome fruits, vine and pepper cultivation. This study was conducted to evaluate the antibacterial effects of 6 different commercial essential oil (thyme, mint, cinnamon, clove, orange and ginger) and 3 different commercial tannin (Artutan, Artutan K and Farmatan) extracts against several isolates of different plant pathogenic bacterial species (Rhizobium spp. (syn. Agrobacterium), Xanthomonas spp. and Erwinia amylovora) by using disc diffusion method. Minimum Inhibitory Concentrations (MICs) was determined by using broth micro-dilution method for plant extracts which caused > 5 mm inhibition zones. Thyme and cinnamon essential oils were determined as the most effective essential oils but ginger essential oil was the least effective oil determined. The activity of essential oils also varied statistically according to bacterial species tested. The most susceptible isolate was determined Rhizobium sp. CU5-4/6 and the most resistant isolates were Xanthomonas spp. MB7-5 and MB6-3. Xanthomonas spp. isolates were found to be more resistant to essential oils than Rhizobium spp. and E. amylovora isolates. MIC value of mint and thyme essential oils against Rhizobium spp. isolates varied between 10-20 mu l/ml; thyme 10 mu l/ ml for Xanthomonas spp. isolates and mint 20 mu l / ml for Xanthomonas spp. MB6-6 isolate. MIC value of cinnamon essential oils against Rhizobium spp. isolates CU5-4/6 and CU5-4/10 was determined as 20-40 mu l/ml. Clove essential oil caused inhibition at 10 mu l/ml against Xanthomonas spp. isolates. Our results clearly shown that plant extracts may be used as an alternative control method in sustainable and organic farming against pathogens.Kahramanmaras Sutcu Imam University [2018/2-44 M]; Tekirdag Namik Kemal University Faculty of AgricultureWe express our thanks for the support of Kahramanmaras Sutcu Imam University (Project no: 2018/2-44 M) and Tekirdag Namik Kemal University Faculty of Agriculture. Also we thank Prof. Dr. Mustafa Mirik for referance culture of Rhizobium spp
t-Extending Krasner Hypermodules
No full textLet M be a hypermodule over a hyperring R such that the intersection of any two subhypermodules of M is a subhypermodule of M. We introduce the concept of a t-essential subhypermodule in M relative to an arbitrary subhypermodule T of M, which is called T-t-essential subhypermodule of M. Our aim in this work is to investigate properties of t-essential subhypermodules. We apply this concept to introduce t-extending hypermodules. Examples are provided to illustrate different concepts
A New Best Proximity Point Result with an Application to Nonlinear Fredholm Integral Equations
No full textIn the current paper, we first introduce a new class of contractions via a new notion called p-cyclic contraction mapping by combining the ideas of cyclic contraction mapping and p-contraction mapping. Then, we give a new definition of a cyclically 0-complete pair to weaken the completeness condition on the partial metric spaces. Following that, we prove some best proximity point results for p-cyclic contraction mappings on D boolean OR E where D,E is a cyclically 0-complete pair in the setting of partial metric spaces. Hence, we generalize and unify famous and well-known results in the literature of metric fixed point theory. Additionally, we present some nontrivial examples to compare our results with earlier. Finally, we investigate the sufficient conditions for the existence of a solution to nonlinear Fredholm integral equations by the results in the paper
İlkokul Dördüncü Sınıf Öğrencilerinin Okumaya Güdülenmelerinin İncelenmesi
No full textBu araştırmanın temel amacı ilkokul dördüncü sınıf öğrencilerinin okumaya yönelik güdülenmelerinin bazı demografik değişkenlere ve okuma güdülenmesinin alt boyutlarına göre değişiminin incelenmesidir. Tarama deseninin kullanıldığı araştırmanın evreni 1928 öğrenci iken; örneklem grubu 582 ilkokul dördüncü sınıf öğrencisinden oluşmaktadır. Veri toplama sürecinde öğrencilerden İlkokul Öğrencileri Motivasyon Ölçeğini ve bazı demografik bilgileri yanıtlamaları istenmiştir. Araştırma verilerinin çözümlenmesinde SPSS 23 programından yararlanılmıştır. Öğrencilerin sosyodemografik özelliklerini belirlemek amacıyla betimsel istatistiklerden; okuma güdülenme puan ortalamalarındaki farkları incelemek amacıyla tek yönlü varyans analizi ve t-testi kullanılmıştır. İstatistiksel analizlerde .05 anlamlılık düzeyi baz alınmıştır. Araştırmanın temel amacına yönelik bulgulara göre okumada içsel güdülenme puan ortalamalarının dışsal güdülenme ortalamalarından daha yüksek olduğu görülmüştür. Okuma güdülenmesi alt boyutlarının birbiri ile doğrudan ve pozitif yönde ilişkili olduğu belirlenmiştir. Kız öğrencilerin erkek öğrencilerden, günlük çok kitap okuyan öğrencilerin biraz okuyan ve hiç okumayan öğrencilerin okuma güdülenme düzeylerinden yüksek düzeyde olduğu belirlenmiştir. Okuma güdülenmesinin okul öncesi eğitim alma ve anne-baba eğitim düzeyine göre bir farklılık bulunmamaktadır. Sonuç olarak, bu araştırmaya göre ilkokul öğrencilerinin okumada içsel güdülenmesinin dışsal güdülenmeden yüksek olduğu anlaşılmıştır. Günlük kitap okumanın okuma güdülenmesi üzerinde önemli bir etkisi olduğu anlaşılmıştır. Öğrencilerde içsel güdülenmenin artırılması için günlük kitap okumanın farkındalığının kazandırılması önerilmektedir
Milli Eğitim Bakanlığının Yetiştirme Yurtlarıyla İmtihanı: Özel Eğitim ve Çocuk Koruma Alanından Tarihsel Deneyimler
No full textTürkiye’de yetiştirme yurtları 1949-1983 yılları arasında Milli Eğitim Bakanlığına bağlı olarak hizmet vermiş kuruluşlardır. 1983 yılında Sosyal Hizmetler ve Çocuk Esirgeme Kurumu kurulunca, yetiştirme yurtları SHÇEK’e devredilmiştir. Bu çalışmada, Milli Eğitim Bakanlığına bağlı oldukları dönemde yetiştirme yurtlarının eğitim sistemi içerisinde ne tür etkiler oluşturduklarının ortaya konulması amaçlanmıştır. Çalışma doküman incelemesine dayanmaktadır. Bulgulara bakıldığında; yetiştirme yurtlarının Milli Eğitim Bakanlığına bağlı birer özel eğitim kurumu gibi kabul edildiği ve özel eğitimin, sosyal engelleri de kapsayacak şekilde geniş kapsamlı düşünüldüğü anlaşılmaktadır. Bu nedenle korunmaya muhtaç çocuklar da özel eğitim kapsamında değerlendirilmiştir. Yetiştirme yurtlarının yapısını ve işleyişini etkileyen temel düzenlemelerden Milli Eğitim Bakanlığı sorumlu olmuştur. Milli Eğitim Bakanlığının uygulamalarında yetiştirme yurtlarının genel yetiştirme yurdu ve özel yetiştirme yurdu şeklinde iki tip olduğu görülmektedir. Genel yetiştirme yurtları, herhangi bir engel durumu bulunmayan korunmaya muhtaç çocuklar için açılan yurtlardır. Özel yetiştirme yurtları ise bedensel, zihinsel ya da sosyal engelleri nedeniyle normal eğitime devam edemeyen çocukların özel bir eğitim ve öğretime tabi tutuldukları yurtlar olarak kabul edilmiştir. Milli Eğitim Bakanlığı, yetiştirme yurtları kapsamındaki görevlerini dönemin koşulları içerisinde yerine getirmeye çalışmıştır