Performance Analysis of An Experimental Micro Flexible Manufacturing System (FMS)

Due to advanced technology, it is very important the performance of FMS for sensivity, production quality, repeatability and energy consumptions. Flexible manufacturing systems (FMSs) are the most automated and technologically sophisticated of the machine cell types used to implement cellular manufacturing. An FMS usually has multiple automated stations and is capable of variable routings among stations, while its flexibility allows it to operate as a mixed model system. The FMS concept integrates many of the advanced technologies that we met in previous units, including flexible automation, CNC machines, distributed computer control, and automated material handling and storage. In this experimental investigation, vibration and accelerations analysis of an experimental FMS with 5 degrees of freedom robot manipulator are presented. Firstly, experimental measurement of accelerations and vibrations are trained with a vibration measurement system and sensors. However, the process of production of part is a cycle of exact production time

Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India). Implications for the regional geology and paleobiogeography

The late Paleocene orthophragminids, hitherto poorly known from the Himalayan foreland basins, are studied from the Lakadong Limestone in Meghalaya, northeastern India, in order to establish a systematic, biostratigraphic, and paleobiogeographical framework for them in the eastern Tethys. In the Mawmluh Quarry section (MQS) on the Shillong Plateau, to the southeast of Tibet, orthophragminids are associated with typical Paleocene orbitoidiform taxa endemic to the Indian subcontinent, i.e., Lakadongia Matsumaru & Jauhri ( D Setia Ferràndez-Cañadell) and Orbitosiphon Rao, and various species of alveolinids, miscellaneids, and rotaliids, characterizing the Shallow Benthic Zones (SBZ) 3 and 4. The orthophragminids belong to two lineages of the genus Orbitoclypeus Silvestri: O. schopeni (Checchia-Rispoli) and O. multiplicatus (Gümbel), both well known from the peri-Mediterranean region and Europe (western Tethys). The latter species is identified here for the first time from the eastern Tethys. Previous records of the genus Discocyclina Gümbel from the Lakadong Limestone actually correspond to misidentified Orbitoclypeus; this implies that the late Paleocene orthophragminid assemblages from Meghalaya and eastern Tethys were less diverse than in the western Tethys. The lineage of Orbitoclypeus schopeni in the lower part of the Lakadong Limestone (SBZ 3) is identified as O. schopeni cf. ramaraoi based on the morphometry of a few specimens, whereas in the upper part (SBZ 4) it corresponds to a transitional development stage between O. schopeni ramaraoi and O. schopeni neumannae (with average Dmeanvalues ranging between 192 and 199 μ m). The embryon diameters of O. multiplicatus, recorded only in SBZ 4, range between 300 and 319 μ m on average, corresponding to transitional development stages of O. multiplicatus haymanaensis and O. multiplicatus multiplicatus. Our data, along with a review of previous Paleocene and Eocene records from India and Pakistan, suggest that Orbitoclypeus is the only orthophragminid in the Paleocene of the eastern Tethys, whereas Discocyclina first appears in early Eocene times, being mainly represented by endemic taxa confined to the Indian subcontinent. Facies change in the MQS from a marine to continental setting within SBZ 4 corresponds to the oldest record from the Indian plate in the Paleogene, which may be linked to the flexural uplift of the passive margin of the Indian plate, marking the onset of the collision of the Indian and Eurasian plates

The Effect of Changes in the Radio-Ulnar Angle on Wrist Scores on the Treatment of Intra-Articular Fractures of the Distal Radius with Wrist Fixator

Aim: This study was aimed to evaluate the effect of radial inclination (RI) angle, assessed with radiological measurement, on the clinical outcomes of intra-articular fractures of the distal radius (IFDR) treated with closed reduction and penning type dynamic wrist fixator. Material and Methods: A total of 120 patients who underwent closed reduction and dynamic wrist fixation due to IFDR between 2012 and 2020 were retrospectively reviewed. The effects of the changes in RI on clinical outcomes according to Mayo wrist scoring (MWS) criteria were investigated by measuring the RI angles in anteroposterior wrist radiographs of the patients at postoperative 2nd, 6th, and 10th weeks. Results: According to the AO fracture classification, 77 (64.2%) of the patients had type C1 and 43 (35.8%) of the patients had type C2 fracture. The patients comprised 69 (57.7%) females and 51 (42.3%) males, and the mean age was 50.08±15.36 years. Fixators were removed at six weeks. RI angles measured at post-op week 10 were 20°-30° in 83 (69.1%) patients, 10°-19° in 32 (26.6%) patients, and 0°-9° in 5 (4.3%) patients. According to MWS, 39 (32.5%) patients were evaluated as excellent, 76 (63.3%) patients as good, and 5 (4.2%) patients as moderate. A statistically significant positive correlation was observed between RI values and MWS (r=0.369, p<0.001). Conclusion: Dynamic wrist fixation with closed reduction is a simple and minimally invasive method, and provides successful clinical and functional results in the treatment of IFDR. We consider that optimal RI angles are effective in clinical and functional outcomes

Pathological Changes of Urinary System in a Dog with Urolithiasis and Renal Papillary Necrosis

Background: Urolithiasis is one of the important lower urinary tract diseases in dogs. Uroliths develop when urine becomes "supersaturated”. Struvite urolithiasis in dogs is formed when urine saturated with magnesium, ammonium and phosphate. Renal papillary necrosis is a form of nephropathy involving the necrosis of the renal papilla. The aim of this case is the evaluation of histopathological changes in kidney and urinary bladder caused by urolithiasis with sitruvite, a pathology commonly seen in dogs. Renal papillary necrosis that encountered in the case was evaluated histopathologically. We intend to discuss the relationship between urolithiasis and renal papillary necrosis.Case: The material of the case was a 7.5 year-old Rottweiler female dog that had been operated for the urolithiasis treatment and died after surgery. The animal sent to pathology department was necropsied and evaluated histopathologically. Also the uroliths removed during the surgery were sent for analysis postoperatively. Qualitative composition of uroliths was determined by a series of chemical analyses in Department of Biochemistry. X-ray diffraction was performed as well in General Directorate of Mineral Research and Exploration in the objective of result verification.  Macroscopically, 30 pieces uroliths with varying size from 1 mm to 3 cm were seen in urinary bladder. They were 110 g in weight with smooth surface and round and/or ovoid shapes.  After necropsy, specimens from kidney and urinary bladder were fixed in 10% neutral buffered formalin, embedded in paraffin wax, cut at 5 μm, and stained with hematoxylin and eosin (HE).  Bladder wall thickening and hemorrhage on mucosa were noticed. Kidneys had roughened surface with the capsule being difficult to peel off. Also, renal papillary necrosis, reddish in color was observed in papilla of the right kidney. Microscopically, crystal formations were observed proximal tubule lumens of kidneys. Interstitial nephritis in cortex and medulla had been noticed in both kidneys. Interstitial nephritis has been noticed in both kidneys. Hemorrhagic necrotic area demarcated by connective tissue was encountered in medulla of the right kidney. In the lamina propria of urinary bladder hemorrhage were noted. Desquamation and degeneration of lamina epithelialis and wide hemorrhage area in lamina propria were noted in urinary bladder. Results obtained from biochemical analysis were verified with x-ray diffraction method, uroliths were determined as magnesium ammonium phosphate (struvite).Discussion: Renal papillary necrosis is a form of nephropathy involving the necrosis of the renal papilla, caused by ischemia of the inner medulla of the kidney. According to the first report of renal papillary necrosis, symmetrical soft calyceal concretions and their appearances are typical lesions for diagnosis of renal papillary necrosis. The presence of crystals in the tubule lumen and the formation of struvite stone (which has the same chemical composition with calyceal concretions) established a distinct relationship between urolithiasis and renal papillary necrosis. This case showed that struvite stones can reach large volumes in urinary bladder, and caused bladder wall thickness and hemorrhages. Also, the lower urinary tract obstruction or urolithiasis should be remembered in the renal papillary necrosis together with the risk of hydronephrosis.                

Automated text analysis and international relations: the introduction and application of a novel technique for Twitter

Social media platforms, thanks to their inherent nature of quick and far-reaching dissemination of information, have gradually supplanted the conventional media and become the new loci of political communication. These platforms not only ease and expedite communication among crowds, but also provide researchers huge and easily accessible information. This huge information pool, if it is processed with a systematic analysis, can be a fruitful data source for researchers. Systematic analysis of data from social media, however, poses various challenges for political analysis. Significant advances in automated textual analysis have tried to address such challenges of social media data. This paper introduces one such novel technique to assist researchers doing textual analysis on Twitter. More specifically, we develop a clustering methodology based on Longest Common Subsequence Similarity Metric, which automatically groups tweets with similar content. To illustrate the usefulness of this technique, we present some of our findings from a project we conducted on Turkish sentiments on Twitter towards Syrian refugees

THE IMPACT OF JOB SATISFACTION ON ANXIETY AND DEPRESSION LEVELS AMONG UNIVERSTY PHYSICIANS

Doktorlarda depresyon, intihar ve madde kullanımı riski yüksektir. İş doyumu ve stres gibipsikososyal etmenlerin mental sağlık üzerine etkileri olduğu bilinmektedir.Amaç: Bu çalışmanın amacı üniversite hastanesinde çalışan hekimlerde depresyon veanksiyete düzeylerinin belirlenmesi ve iş doyumunun etkisinin incelenmesidir.Yöntem: Çalışmada Dokuz Eylül Üniversitesi Tıp Fakültesi\'nde çalışan ve sistematikörnek seçme yöntemi ile seçilen 300 hekime anket dağıtıldı, 153 hekimden yanıt alındı (%51,0). Sosyo-demografik ve çalışma yaşamı ile ilgili soruların sorulduğu, kapalı zarflardadağıtılan ve iki hafta sonra toplanan ankette depresyon ve anksiyete ölçümünde HastaneAnksiyete ve Depresyon Ölçeği kullanıldı. İş doyumunu değerlendirmek üzere tek bir soruile 1 ile 10 arasında derecelendirmeleri istendi ve işaretlenen puanlara göre iş doyumudüşük, orta ve yüksek olarak sınıflandırıldı.Bulgular: Yüksek anksiyete ve depresyon görülme sıklığı sırasıyla %18,9 ve 27,4\'tür. İşdoyumu ve anksiyete arasında anlamlı bir ilişki saptanmamıştır (p=0,239). İş doyumu düşükolanlarda, cerrahi bilimlerde çalışanlarda ve asistan konumunda çalışanlarda depresyondüzeyi anlamlı olarak yüksek bulunmuştur (p<0,0001).Sonuç: Hekimlerde anksiyete ve depresyon düzeyleri yüksek bulunmuştur. İş doyumu vedepresyon arasında ilişki saptanmıştır. Hekimlerin iş doyumları mental sağlıkları, kurumlarıve hastaları için önemlidir. İş doyumu bireysel bir sorun olarak değil kurumsal olarakdeğerlendirilmeli; izlem sistemi oluşturularak ileriye yönelik ve girişimsel çalışmalara olanaksağlanmalıdır.Studies have shown that physicians have an increased risk of mental health problemsincluding depression, suicide and substance abuse. Job satisfaction and job stress mightaffect physicians mental well being.Objective: The aim of this study was to determine the level of anxiety and depression ofmedical doctors working in a university hospital and whether job satisfaction has an impacton level of anxiety and depression.Methods: The study was completed with 153 physicians those systematically selectedfrom university medical faculty. The response rate was 51,0%. Hospital Anxiety andDepression Scale was used to measure anxiety and depression. The study group was ratedtheir job satisfaction by a continuous scale ranged one to ten. Then tertiles were calculatedin order to categorize the job satisfaction as low, modest and high.Results: Anxiety prevalence wasfound to be 18.9% and depressionwas 27.4%. Job satisfaction did notalter the anxiety levels (p=0.239).Depression were significantly higher inthe least job satisfied physicians (p<0.0001).Conclusion: Job satisfaction is an important issue for physicians\' mental well-being, theirinstitution and patients. Hence it should be considered not as an individual problem but asan organisational one. Surveillence systems should be established which allow follow-upand interventional studies

Multiple Orbitoides d’Orbigny lineages in the Maastrichtian? Data from the Central Sakarya Basin (Turkey) and Arabian Platform successions (Southeastern Turkey and Oman)

The standard reconstruction of species of Orbitoides d'Orbigny into a single lineage during the late Santonian to the end of the Maastrichtian is based upon morphometric data from Western Europe. An irreversible increase in the size of the embryonic apparatus, and the formation of a greater number of epi-embryonic chamberlets (EPC) with time, is regarded as the main evolutionary trends used in species discrimination. However, data from Maastrichtian Orbitoides assemblages from Central Turkey and the Arabian Platform margin (Southeastern Turkey and Oman) are not consistent with this record. The Maastrichtian Besni Formation of the Arabian Platform margin in Southeastern Turkey yields invariably biconvex specimens, with small, tri- to quadrilocular embryons and a small number of EPC, comparable to late Campanian Orbitoides medius (d'Archiac). The upper Maastrichtian Tarakli Formation from the Sakarya Basin of Central Turkey contains two distinct, yet closely associated forms of Orbitoides, easily differentiated by both external and internal features. Flat to biconcave specimens possess a small, tri- to quadrilocular embryonic apparatus of Orbitoides medius-type and a small number of EPC, whereas biconvex specimens possess a large, predominantly bilocular embryonic apparatus, and were assigned to Orbitoides ex. interc. gruenbachensis Papp-apiculatus Schlumberger based on morphometry. The flat to biconcave specimens belong to a long overlooked species Orbitoides pamiri Meric, originally described from the late Maastrichtian of the Tauride Mountains in SW Turkey. This species is herein interpreted to be an offshoot from the main Orbitoides lineage during the Maastrichtian, as are forms that we term Orbitoides 'medius', since they recall this species, yet are younger than normal occurrence with the accepted morphometrically defined lineage. The consistent correlation between the external and internal test features in O. pamiri implies that the shape of the test is not an ecophenotypic variation, but appears to be biologically controlled. We, therefore, postulate that more than one lineage of Orbitoides exists during the Maastrichtian, with a lineage that includes O. 'medius' and O. pamiri displaying retrograde evolutionary features

Mask-Related Headache Among Health Workers During COVID-19 Pandemics: Study from Somalia

Aim: After the outbreak of Coronavirus Disease 2019 (COVID-19), new headaches have been reported to develop or worsen among healthcare workers who regularly wear personal protective equipments. In this study, we investigated the possible relationship between de-novo (new-onset) headache features associated with the mask used and pre-existing and exacerbated headaches. It is the first study on this subject on behalf of Somalia. Methods: This is a cross-sectional study conducted at the Mogadishu COVID-19 pandemic hospital, Somalia, with volunteer healthcare workers. Data were collected through a questionnaire. Participants were asked 15 questions in the survey and Pearson-chi-square test was used as statistics. Results: This study was conducted with 200 healthcare workers working in the hospital, 114 (57%) were male, 86 (43%) were female, and the mean age was 28. Participants 90 (45%) used surgical masks, 32 (16%) filtered masks (N95), 78 (39%) both; majority of 109 (54.5%) wore masks for more than 6 hours a day. Pre-existing headache was reported by78(39%) of the subjects. 55(70%) of those with pre-existing headache reported aggravation of their headache. Statistically significant relationship was found between duration of mask use and aggravation of pre-existing headache. De-novo headache characteristics were throbbing 21(20%), pressing 31(29%), unilateral 19(18%), and 35(33%) bilateral. A statistically significant relationship was also found between the duration of use of face mask and the development of de-novo headache, regardless of mask type. Conclusion: As per our study, prolonged use of face masks during COVID-19 pandemics was associated with de-novo headaches and exacerbation of pre-existing headache. This situation, which has caused complaints as healthcare professionals and some patients continue to wear masks, will continue to be investigated