Return and risk spillovers between the ESG global index and stock markets: Evidence from time and frequency analysis

In this paper, we examine comovements between stock market returns and investments that take into account Environmental, Social, and Governance (ESG) factors by studying the interconnections between the two returns in time and frequency space. We study interdependencies between the conventional stock market and ESG stocks using daily data from 2007 to 2021 for 19 developing and 19 developed countries. Our results show significant comovement patterns between ESG returns and stock returns at various frequencies, time scales, and sample episodes in all countries, particularly during periods of financial turmoil. For the most part, we document positive (in-phase) comovements between the stock returns and ESG returns in developing countries and negative (out-of-phase) comovements in developed countries. This implies limited portfolio gains from adding ESG stocks to portfolio diversification in developing countries but significant gains in developed countries.Copyright (c) 2022 Borsa Istanbul Anonim S, irketi. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Trichofolliculoma in a guinea pig: Diagnosis and surgical treatment

Bu çalışmada, bir Gine domuzunda gözlenen trikofolliküloma olgusu ve cerrahi sağaltımı tanımlanmaktadır. Üç yaşında, dişi ve 800 gr ağırlığında bir ginepig sol lumbo-sakral bölgede şişkinlik şikâyeti ile Afyon Kocatepe Üniversitesi, Veteriner Fakültesi, Hayvan Hastanesine getirildi. Klinik muayenede şişkinliğin katı-esnek kıvamda ve enfekte olduğu görüldü. Enfeksiyon kontrol altına alındıktan sonra kitlenin cerrahi olarak uzaklaştırılmasına karar verildi. Kitle cerrahi olarak uzaklaştırıldı ve uzaklaştırılan doku histopatolojik inceleme için laboratuvara gönderildi. Kitlenin 8 gr ağırlığında 3,5x3x0,6 cm boyutlarında olduğu tespit edildi. Histopatolojik inceleme sonucunda uzaklaştırılan kitlenin trikofolliküloma olduğu tespit edildi. Hayvanın postoperatif on gün sonra yapılan kontrollerinde tamamen iyileştiği gözlendi ve dikişler uzaklaştırıldı. Sonuç olarak, bir gine domuzunda cerrahi girişimle başarılı bir şekilde sağaltılan trikofolliküloma olgusunun klinisyen veteriner hekimlerin dikkatine sunulmasının yararlı olacağı kanısına varılmıştır.This study was designed to describe the case of trichofolliculoma and its surgical treatment in a Guinea Pig. A 3-year-old male Guinea Pig, weighing 800 gr was referred to the Afyon Kocatepe University, Animal Hospital with complaint of swelling on lumbo-sacral area. The clinical examination revealed that the mass was solid-elastic consistency and infected. It was decided to remove the mass by surgical intervention following the treatment of infection. The mass was removed surgically and the removed tissue was transfered to laboratory for histopathologic examination. It was observed that the mass was 3 gr and 3.5x3x0.6 cm in size. Trichofolliculoma was diagnosed by histopathologically. The sutures were removed ten days later. Postoperative examination showed that the animal was completely recovered In conclusion, it was suggested that the description of diagnosis and successful surgical treatment of trichofolliculoma in a guinea pig may be helpful for veterinary practitioner

Release of cetyl pyridinium chloride from fatty acid chelate temporary dental cement

Objective To determine whether the antimicrobial nature of a fatty acid chelate temporary dental cement can be enhanced by the addition of 5% cetyl pyridinium chloride (CPC). Materials and methods The temporary cement, Cavex Temporary was employed, and additions of CPC were made to either the base or the catalyst paste prior to mixing the cement. Release of CPC from set cement specimens was followed using reverse-phase HPLC for a period of up to 2 weeks following specimen preparation. Potential interactions between Cavex and CPC were examined by Fourier transform infrared spectroscopy (FTIR) and antimicrobial effects were determined using zone of inhibition measurements after 24 h with disc-shaped specimens in cultured Streptococcus mutans. Results FTIR showed no interaction between CPC and the components of the cement. CPC release was found to follow a diffusion mechanism for the first 6 h or so, and to equilibrate after approximately 2 weeks, with no significant differences between release profiles when the additive was incorporated into the base or the catalyst paste. Diffusion was rapid, and had a diffusion coefficient of approximately 1 × 10−9 m2 s−1 in both cases. Total release was in the range 10–12% of the CPC loading. Zones of inhibition around discs containing CPC were significantly larger than those around the control discs of CPC-free cement. Conclusions The antimicrobial character of this temporary cement can be enhanced by the addition of CPC. Such enhancement is of potential clinical value, though further in vivo work is needed to confirm this

Ratlarda renal iskemi/reperfüzyon hasarında curcumin'in etkileri

Bu araştırmada, Renal İskemi/Reperfüzyon Hasarı Modelinde Curcumin'in etkilerini biyokimyasal ve histopatolojik olarak araştırmak amaçlanmıştır. Çalışmada ratlar kontrol (C), sham, iskemi repürfüzyon (I/R) ve curcumin (CUR) grubu olmak üzere (n=6) toplam 24 dişi Wistar Rat kullanılmıştır. Genel anestezi altında Grup I/R ve CUR da laparatomi uygulanarak sol böbrek pedikülü diseke edilmiş ve böbrek arteri klempe edilerek 1 saat iskemi ve 6 saat reperfüzyon gerçekleştirilmiştir. Grup CUR da 500 mg/kg Curcumin iskemi sonrası intraperitonal olarak verilmiştir. Serum MPO, IMA, MDA, NO, SOD, GPx, AOS , üre ve kreatinin ölçümleri gerçekleştirilmiştir. Doku örneklerinde MPO, MDA, NO, SOD, GPx, AOS ölçülmüştür. Histopatolojik inceleme ile böbrek dokusunda I/R hasarı skorlanmıştır. Serum ve doku AOS Grup I/R Grup CUR ile karşılaştırıldığında istatistiksel önemi olacak şekilde Grup CUR'de yüksel bulunmuştur (p<0.05). Doku NO düzeyi I/R grubu ile karşılaştırıldığında Grup CUR’da istatistiksel önemi olacak şekilde düşük bulunmuştur (15,30±5,41, 4,8±1,37) (p<0.05). Histopatolojik skorlamada Grup CUR, Grup I/R ile karşılaştırıldığında istatistiksel olarak anlamlı olacak şekilde düşük bulunmuştur (p<0.05). Sonuç olarak; bu araştırmada Curcumin’in Renal I/R hasarı modelinde serum ve doku örneklerinde oksidatif stresi azaltarak I/R hasarını önlemede olumlu etkisi olduğu ve histopatolojik inceleme ile de Curcumin'in bu olumlu etkisi desteklenmiştir.This study aimed to investigate the biochemical and histopathological effects of curcumin on Renal Ischemia/Reperfusion Injury. Twenty-four female Wistar rats were used in the study and divided into control (C), sham, ischemia/reperfusion (I/R), and curcimin (CUR) groups (n=6). Laparotomy was performed under general anesthesia in I/R and CUR groups than the left renal pedicle was dissected it was clamped. Then, 1-h ischemia and 6-h reperfusion were applied. 500 mg/kg Curcumin was given intraperitoneally to the CUR group after ischemia application. MPO, IMA, MDA, NO, SOD, GPx, AOS, urea, and creatinine levels were measured in serum samples. MPO, MDA, NO, SOD, GPx, and AOS were also measured in tissue samples. The histopathological examination was performed. Serum and tissue AOS levels were significantly higher in the CUR group than in the I/R group (P<0.05). Tissue NO levels were significantly lower in the CUR group than in the I/R group (15.30±5.41 and 4.8±1.37, respectively) (P<0.05). Histopathological scores were also significantly lower in the CUR group than in the I/R group (P<0.05). The results showed that curcumin prevented I/R damage by decreasing oxidative stress in serum and tissue samples in rat renal I/R model

PENCERE BOŞLUKLU PERDE DUVARLA GÜÇLENDİRİLMİŞ 1/3 ÖLÇEKLİ BETONARME ÇERÇEVELERİN DAVRANIŞI

Bu deneysel çalışmada, 1/3 ölçekli, tek açıklıklı, iki katlı, 6 adet betonarme çerçeve üretilmiş ve pencere boşluklu veya boşluksuz dolgu duvar ile güçlendirilerek davranışları araştırılmıştır. Bu deney numuneleri depremi benzeştiren tersinir-tekrarlanır yükler altında test edilmiştir. Deney numuneleri Türkiye’deki betonarme yapılarda çoğunlukla gözlemlenen eksiklikleri yansıtacak şekilde üretilmiştir. İlk deney numunesi güçlendirme uygulaması yapılmamış referans numunedir. Diğer numuneler ise farklı pencere boşluk oranlarına ve konumuna sahip betonarme dolgu duvarlı numunelerdir. Yapılan deneylerin sonuçları betonarme dolgu duvarların, dayanım, rijitlik ve enerji tüketme üzerindeki etkilerini ortaya koyacak şekilde değerlendirilmiştir.  Deney sonuçları, betonarme dolgu duvarlı numunelerin, referans numuneden daha fazla yatay yük dayanımına, enerji tüketimine ve rijitliğe sahip olduğunu göstermiştir

The relationship between functional capacity and ultrasonic tissue characterization in patients with idiopathic dilated cardiomyopathy

Background: Ultrasonic tissue characterization (UTC) has been widely used to investigate left ventricular (LV) dysfunction in various cardiac disorders. The aim of this study was to investigate the correlation between functional capacity and UTC in patients with idiopathic dilated cardiomyopathy (IDCM).Methods and Results: Treadmill test according to modified-Bruce protocol was performed in 48 patients with IDCM to assess their functional capacity. Baseline clinical and echocardiographic variables were obtained and UTC was performed on images obtained from septum and posterior wall (PW). Cyclic variation (CV) index of mean gray level (MGL) was calculated according to the formula: [(MGLdiastole − MGLsystole) ÷ MGLdiastole] × 100.PW and septum CV indices were correlated with exercise duration (r = 0.63, p = 0.001 and r = 0.67, p = 0.0001, respectively) and “MET” level (r = 0.80, p = 0.0001 and r = 0.83,p = 0.0001, respectively). The ROC curve analysis revealed that the PW CV index was a strong indicator of good exercise capacity (&gt; 8 METs) with an AUC of 0.97 (95% CI0.90–1.0), as the interventricular septum (IVS) CV index (AUC = 0.97, 95% CI 0.89–1.0). Sensitivity, specificity, positive predictive value, and negative predictive value to identify good exercise capacity for IVS CV index were 90%, 88%, 82%, and 94%, respectively and for the PW CV index, 90%, 88%, 82%, and 94%, respectively.Conclusions: In this particular study, we found out that in patients with severe LV dysfunction good exercise capacity was related to septum and PW CV indices measured by UTC, and these indices may be used as an indirect prognostic marker in heart failure

Return and Risk Spillovers between ESG Global Index and Stock Markets: Evidence from Time and Frequency Analysis

In this paper, we examine the comovements between stock market returns and investments that take into account Environmental, Social, and Governance (ESG) factors by studying interconnections between the two returns in time and frequency space. We study interdependencies between the conventional stock market and ESG stocks using daily data from 2007 – 2021 for a set of 19 developing and 19 developed countries. Our results show significant comovement patterns between ESG returns and stock returns at various frequencies, time scales, and various sample episodes in all countries, particularly over financial turmoil episodes. For the most part, we document positive (in-phase) comovements between the stock returns and ESG returns in developing countries and negative (out-of-phase) comovements in developed countries. This implies limited portfolio gains from adding ESG stocks to portfolio diversification in developing countries but significant gains in developed countries

Ultrasonography-Guided Injection for Quadriceps Fat Pad Edema: Preliminary Report of a Six-Month Clinical and Radiological Follow-Up

Purpose: To investigate efficacy and safety of ultrasonography-guided local corticosteroid and anesthetic injection followed by physical therapy for the management of quadriceps fat pad (QFP) edema. Materials and Methods: We prospectively evaluated 1671 knee MRI examinations in 1542 patients for QFP edema with mass effect, which was present in 109 (6.5%) knees. Participants were assigned into injection and therapy groups (both received the same physical therapy program). Injection group was first treated with ultrasonography-guided QFP injection of 1 mL corticosteroid and 1 mL local anesthetic agent. Patients were evaluated at baseline and 1-, 2-, 6-month follow-up for pain using static and dynamic visual analogue scale (VAS), suprapatellar tenderness, and QFP edema on MRI. Results: Final sample size consisted of 19 knees (injection group, 10; therapy group, 9) in 17 patients. An overall improvement was detected in both groups between baseline and final assessments. The injection group fared better than the therapy group in static VAS scores (3.33 ± 1.70 versus 0.56 ± 1.33), while there was no such difference for dynamic VAS. Incidence of suprapatellar tenderness decreased in both groups, statistically significantly in the injection group (from 100% to 0%). Pain reduction was greater in the injection group at the first month (88.9% – 90% good response versus 50% – 66.7% good response, static-dynamic VAS scoring, respectively), whereas there was no such superiority at the sixth month. No severe adverse events were identified. Conclusion: Ultrasonography-guided local injection followed by physical therapy is safe in the management of QFP edema; however, it is not superior to stand-alone physical therapy program in the long term

Syndecan-1 (CD138) expression in acute myeloblastic leukemia cells - An immuno electron microscopic study

Syndecan-1 (CD138), an important transmembrane heparan sulfate proteoglycan is expressed in distinct stages of cell differentiation. Although its expression in acute lymphoblastic leukemia (ALL) cells is well known; its function or presence in acute myeloblastic leukemia (AML) cells is still largely unknown. The expression of syndecan-1 was studied in bone marrow biopsies of three patients with AML using electron microscopic immunocytochemistry. Positive expression of syndecan-1 was found in AML cells. These results suggest that syndecan-1 expression is not only a characteristic phenotypic marker for ALL, but is also expressed in AML cells