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Extraction and characterization of biological phytoconstituents of commiphora gileadensis leaves using soxhlet method
Get PDFCommiphora gileadensis is a medicinal plant with a wide range of biological characteristics. Many medical diseases can be treated using the leaves of C. gileadensis, including bacterial infections, inflammatory illnesses, and wounds. As a result, the Soxhlet extraction method was used to extract the phenolic components and measure the recovery yields from C. gileadensis leaf. The impacts of the Soxhlet extraction parameters (extraction time 30–150 min, sample/solvent ratio 1:20–1:40 g/mL, and concentration of ethanol solvent 20–100% v/v) on the total flavonoid content (TFC), total phenolic content (TPC), and extraction yield were investigated using the one-factor-at-a-time (OFAT) technique. Fourier transform infrared spectroscopy (FTIR) and gas chromatography–mass spectroscopy (GC–MS) analyses have been employed to evaluate the extracts for the presence of various phytochemicals. According to the results, the C. gileadensis leafs ethanolic extract extracted via the Soxhlet process achieved the maximum yields at 90 min of extraction time, a feed/solvent ratio of 1:30 g/mL, and a 40% v/v ethanol concentration. These yields were: extraction yield = 23.20 ± 0.10% w/w, TPC = 59.93 ± 1.33 mg GAE/g d.w., and TFC = 19.65 ± 1.77 mg QE/g d.w. Further, a total of 20 phenolic components with excellent antioxidant characteristics were found in the leaf extract of C. gileadensis extracted via the Soxhlet method. © 2024 by the authors
Histerosalpingografi(HSG) sırasında müzik ve doğal manzara resimleri kullanımının kadınların ağrı düzeyi, anksiyete ve analjezik kullanımına etkisi
Get PDFÇalışma, HSG çekilen kadınların ağrı ve anksiyeteleri ile analjezik kullanımlarının azaltılmasını sağlamak amaçlı müzik ve doğal manzara resimlerinin etkinliğinin değerlendirilmesi amacıyla randomize kontrollü ön test- son test kontrol gruplu deneme modeli yöntemiyle yapılmıştır. Araştırma, Aralık 2022 ve Temmuz 2023 tarihleri arasında Dicle Üniversitesi Hastanesi Radyoloji biriminde yürütülmüştür. Çalışmada gönüllü katılımcılar basit randomizasyon yöntemi ile üç gruba ayrılmıştır. Araştırma toplamda 99 gönüllü kadın (kontrol grubu: 33, müzik grubu: 33, doğal manzara resimleri video grubu: 33) ile tamamlanmıştır. Veriler sosyo-demografik veri anketi, durumluk-sürekli kaygı envanteri, visual analog skala (VAS) ve analjezik takip formu kullanılarak toplanmıştır. Verilerin toplanılması için katılımcı kadınlara veri toplama araçları ile ön test ve son test uygulanmıştır. Kontrol grubundaki kadınlara ön test sonrası müdahale yapılmamış olup veri toplama araçlarıyla HSG işleminden sonra son test uygulanmıştır. Müzik grubundaki kadınlara ön test için veri toplama araçları uygulanmış olup kadınlar HSG işlemine alındıktan sonra kulaklık takılmış ve müzik açılmıştır. İşlemden 15 dakika sonra kadınlara son test uygulanmıştır. 24 saat sonra kadınlara ulaşılıp analjezik kullanıp kullanmadığı sorgulanmıştır. Doğal manzara resimleri video grubundaki kadınlara ön test için veri toplama araçları uygulanmış olup kadınlar HSG işlemine alındıktan sonra kadınlara ipad ile doğal manzara resimlerinin olduğu video açılmıştır. İşlemden 15 dakika sonra kadınlara son test uygulanmıştır. 24 saat sonra kadınlara ulaşılıp analjezik kullanıp kullanmadığı sorgulanmıştır. Veriler SPSS 21 (Statistical Package for the Social Sciences) paket programına aktarılarak analiz edilmiştir. Ön test puanları gruplar açısından incelendiğinde; ön test puanları, gruplara göre istatistiksel olarak anlamlı farklılık göstermemektedir (p>0,05). Başlangıçta homojenliğin sağlandığı görülmüştür. Müdahale sonrası son test durumluk puan ortalaması incelendiğinde; kontrol grubunun 47,39±6,80; müzik grubunun 27,24±5,33 ve doğal manzara resimleri video grubunun 29,72±4,08 olduğu, VAS puan ortalaması incelendiğinde; kontrol grubunun 6,88±2,13; müzik grubunun 2,27±1,03 ve doğal manzara resimleri video grubunun 1,82±0,84 olduğu görülmüştür. Müzik ve doğal manzara resimleri video gruplarındaki kadınların analjezik kullanmadığı, kontrol grubunun %48,5'inin analjezik kullandığı bulunmuştur. Çalışmamızın sonucunda HSG sırasında kadınlara müzik ve doğal manzara resimlerininin kadınların ağrı, anksiyete ve analjezik alma durumlarının azaltılmasında etkili bir yöntem olduğu saptanmıştır.The study was conducted with a randomized controlled pretest-posttest control group trial model method to evaluate the effectiveness of music and natural landscape pictures to reduce pain and anxiety and analgesic use of women undergoing HSG. The study was conducted between December 2022 and July 2023 in the Radiology unit of Dicle University Hospital. In the study, volunteer participants were divided into three groups by simple randomization method. The study was completed with a total of 99 volunteer women (control group: 33, music group: 33, natural landscape pictures video group: 33). Data were collected using a socio-demographic data questionnaire, state-trait anxiety inventory, visual analog scale (VAS) and anesthesia follow-up form. Pre-test and post-test with data collection tools were applied to the participant women for data collection. The women in the control group were not intervened after the pre-test and the post-test was applied after the HSG procedure with data collection tools. Data collection tools were applied to the women in the music group for the pretest, and after the women were taken to the HSG procedure, headphones were put on and music was turned on. The post-test was administered to the women 15 minutes after the procedure. After 24 hours, the women were contacted and questioned whether they used anelgesic or not. Data collection tools were applied to the women in the natural landscape pictures video group for the pretest, and after the women were taken to the HSG procedure, the video with natural landscape pictures was opened to the women with an ipad. The post-test was applied to the women 15 minutes after the procedure. After 24 hours, the women were contacted and questioned whether they used anelgesic or not. The data were analyzed by transferring to SPSS 21 (Statistical Package for the Social Sciences) package program. When the pre-test scores were analyzed in terms of groups; the pre-test scores did not show statistically significant difference according to the groups (p>0.05). It was observed that homogeneity was achieved at the beginning. After the intervention, the mean post-test state score was 47.39±6.80 in the control group, 27.24±5.33 in the music group and 29.72±4.08 in the natural landscape pictures video group, and the mean VAS score was 6.88±2.13 in the control group, 2.27±1.03 in the music group and 1.82±0.84 in the natural landscape pictures video group. It was found that 48.5% of the women in the music and natural landscape pictures video groups did not use analgesics, while 48.5% of the control group used analgesics. As a result of our study, it was determined that music and natural landscape pictures were an effective method to reduce women's pain, anxiety and analgesic use during HSG
Development and psychometric testing of the Pediatric Atraumatic Care Attitude Scale (PACAS) in pediatric nurses
No full textObjective: The study aimed to develop and validate the Pediatric Atraumatic Care Attitude Scale (PACAS) for pediatric nurses, measuring attitudes toward atraumatic care practices. Methods: This methodological and correlational study included 336 pediatric nurses from various clinics in Turkey, between January and August 2024. Construct validity was evaluated using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Internal consistency was assessed through item-total score correlation, test-retest reliability, and Cronbach's α coefficients. Results: The content validity index (CVI) for PACAS items ranged from 0.84 to 1.00. The Kaiser-Meyer-Olkin (KMO) coefficient was 0.978, and Bartlett's test of sphericity was significant (χ2 = 14,110.425, P < .001), supporting factor analysis. EFA revealed a two-factor structure with 31 items, explaining 76.7 % of the variance. The factors, “Knowledge and Awareness” and “Practice and Family Involvement,” had loadings between 0.716 and 0.901 and 0.751–0.962, respectively. CFA confirmed the model fit (χ2/df = 2.77, RMSEA = 0.073, NFI = 0.92, NNFI = 0.97, CFI = 0.94, GFI = 0.91). Cronbach's α was 0.985, with subscale coefficients of 0.978 and 0.983. Test-retest reliability showed strong correlations (r = 0.980, r = 0.985, r = 0.957), with no significant differences between test and retest scores (P > .05). Conclusions: PACAS is a reliable and valid tool for assessing pediatric nurses' attitudes toward atraumatic care, with the potential to enhance pediatric nursing practices by improving adherence to atraumatic care principles. Implications to practice: PACAS helps integrate atraumatic care into nursing, enhancing pediatric care quality and outcomes. © 2024 Elsevier Inc
A holistic analysis on risks of post-disaster reconstruction using rstudio bibliometrix
Get PDFPost-disaster reconstruction (PDR) is a complex and unpredictable process, especially concerning the construction sector, where understanding associated risks is increasingly vital. This study investigates and evaluates the present condition of post-disaster reconstruction risk (RoPDR) and discerns research trends and deficiencies in the domain via a systematic literature review (SLR) and bibliometric analysis. The Web of Science (WoS) was preferred for its extensive repository of pivotal research publications and its integrated analytical capabilities for producing representative data. This study performed a comprehensive bibliometric analysis of 204 peer-reviewed journal articles regarding the risks associated with post-disaster reconstruction from 1993 to 2024, utilizing the R statistical programming package RStudio Bibliometrix R version 4.3.1 to map the research landscape, identify literature gaps, and analyze rising trends. As a result of the analyses, the risks of post-disaster reconstruction were classified into four main clusters. Despite numerous studies exploring post-disaster reconstruction through diverse perspectives and methodologies, the associated risks of these projects remain inadequately analyzed. This inaugural bibliometric study in the realm of RoPDR utilizes novel techniques, such as the h-index, thematic mapping, and trend topic analysis, to attain a comprehensive understanding. Hence, the outcome of this study will aid scholars and practitioners in thoroughly comprehending the present condition and identifying prospective research directions. © 2024 by the authors
Cerrahi birimlerde çalışan hemşirelerin afetlere hazır olma durumları ve müdahale özyeterliliklerinin incelenmesi; çok merkezli kesitsel çalışma
Get PDFCerrahi birimlerde çalışan hemşirelerin afetlere hazır oluş durumlarının ve müdahale
özyeterliklerinin incelenmesidir. Araştırmaya başlamadan önce etik onay alındı (Onay No:2023/54).
Araştırma 1 Nisan -1 Eylül 2023 tarihleri arasında Ankara’da bulunan üç hastanenin cerrahi servislerinde
çalışan hemşireler ile yapılan çok merkezli tanımlayıcı kesitsel bir çalışmadır. Araştırma 540 gönüllü hemşire
ile yapıldı. Araştırmanın verileri afetlere hazır bulunuşluluk ölçeği ve afetlere müdahale özyeterlilik ölçeği
kullanılarak toplandı. Veriler yüz yüze anket ve online form yöntemi ile toplandı. Evrenin %80’ine ulaşıldı.
Verilerin analizinde SPSS 22.0 programı kullanıldı. İstatistiksel anlamlılık için p<0.05 değeri kullanıldı.
Verilerin raporlanmasında STROBE kontrol listesi kullanıldı. Hemşirelerin yaş ortalaması 27.17±9.36,
%70.6’sı kadın, %67’si lisans mezunudur. Hemşirelerin afetlere hazır bulunuşluk puan ortalamaları
72.10±13.71, müdahale özyeterlilik puan ortalaması 34.14±5.80 olarak hesaplandı. Ön lisans ve lise mezunu
hemşirelere göre lisans mezunu hemşirelerin afete hazır bulunuşluk ve afetlerde müdahale özyeterlilik puan
ortalamaları anlamlı olarak daha yüksektir (p=0.001). Hemşirelerin afetlere hazır bulunuşlukları ve müdahale
öz yeterlilik puanları arasında pozitif yönde orta düzeyde bir korelasyon olduğu belirlendi (r=0.388,
p=0.001). Sonuç olarak, lisans mezunu cerrahi hemşirelerin afetlere hazır bulunuşluk ve müdahale özyeterlik
düzeyleri daha yüksektir. Ayrıca, afetlere hazır bulunuşluk ile müdahale özyeterlikleri arasında pozitif bir
ilişki saptanmıştır.To examine the disaster preparedness and intervention self-efficacy of nurses working in surgical
units. Ethical approval was obtained before starting the research (Approval No: 2023/54). The research is a
multicenter descriptive cross-sectional study conducted with nurses working in the surgical wards of four
hospitals in Ankara between 1 April and 1 September 2023. The research was conducted with 540 volunteer
nurses. The data of the research were collected using the disaster readiness scale and disaster response selfefficacy scale. The data were collected by face-to-face survey method. 80% of the universe has been reached.
SPSS 22.0 program was used to analyze the data. A value of p<0.05 was used for statistical significance.
STROBE checklist was used in reporting data. The average age of the nurses was 27.17±9.36, 70.6% were
women, 67% had a bachelor's degree. The average disaster readiness score of the nurses was calculated as
72.10±13.71, and the average intervention self-efficacy score was calculated as 34.14±5.80. Disaster
readiness and disaster response self-efficacy scores of nurses with a bachelor's degree are significantly higher
than nurses with an associate degree and high school degree (p=0 001). It was determined that there was a
moderate positive correlation between nurses' disaster preparedness and intervention self-efficacy scores
(r=0.388, p=0.001). As a result, undergraduate surgical nurses have higher disaster readiness and response
self-efficacy levels. Additionally, a positive relationship was found between disaster preparedness and
response autonomy
Kronik hastalığı olan bireylerin diyetlerinin diyet inflamatuar indeksi'nin araştırılması
Get PDFBu çalışma, kronik hastalığa sahip (obezite, Tip-2 Diyabet, hipertansiyon, hiperlipidemi, kardiyovasküler hastalıklar) bireylerin diyetlerinin inflamatuar indeksinin araştırılması amacıyla 27 erkek ve 23 kadın yetişkin birey üzerinde yapılmıştır. Bireylerden yüz yüze görüşülerek soru kağıdı ile veriler toplanmış, antropometrik ölçümleri ve besin tüketim kayıtları alınmıştır. Elde edilen veriler SPSS 22 programında analiz edilmiş ve istatistiksel anlamda önemlilik düzeyi p<0.05 olarak belirlenmiştir. Bireylerin Bel/Boy oranına göre erkek bireylerin %55.6'sı ve kadın bireylerin %78.3'ü çok yüksek risk grubundadır. Erkek bireylerin %59.3'ü günde 3 ana öğün tüketirken, kadın bireylerde bu oran %34.7'dir. Bireylerin diyetleri inflamatuar indeks skoruna göre 3 quartile ayrılmıştır. Birinci quartil (Q1) inflamasyon önleyici diyeti, ikinci quartil (Q2) inflamasyon üzerine etkisi olmayan diyeti, üçüncü quartil ise (Q3) inflamasyon artırıcı etkili diyeti temsil etmektedir. Erkek bireylerin %40.7'sinin diyeti inflamasyon önleyici (Q1), %40.7'sinin diyeti inflamasyon üzerine etkisi olmayan (Q2) ve %18.6'sının diyeti inflamasyon artırıcı (Q3) bulunmuştur. Kadın bireylerde ise %8.7'sinin diyeti inflamasyon önleyici (Q1), %56.5'inin diyeti inflamasyon üzerine etkisi olmayan (Q2) ve %34.8'inin diyetinin inflamasyon artırıcı (Q3) olduğu saptanmıştır. Anti-inflamatuar etki gösteren E vitamini, tiamin, niasin, B6 vitamini, folat, C vitamini, magnezyum, çinko, kafein, lif ve yeşil-siyah çay alım ortalamaları inflamasyon artırıcı (Q3) diyet tüketen bireylerde, inflamasyon üzerine etkisi olmayan (Q2) ve inflamasyon önleyici (Q1) diyet tüketenlere göre daha düşüktür(p<0,05). İnflamasyon önleyici (Q1) diyet tüketen bireylerin tekli doymamış, çoklu doymamış ve omega-3 yağ asidi tüketim ortalamaları diğer bireylere göre daha yüksektir(p<0,05). Bu besin ögelerinin tüketimi diyet inflamatuar skorunu düşürücü anti-inflamatuar etki göstermektedir. Bireylerin trigliserit, total kolesterol, LDL, HDL, CRP ortalama değerleri ile Dİİ quartilleri arasında anlamlı bir ilişki bulunmamıştır (p>0.05). Bireylerin Açlık Kan Şekeri (AKŞ) ile Dİİ skorları arasında anlamlı ilişki bulunmuştur (p<0.05) ve bireyin Dİİ skoru yükseldikçe AKŞ değeri de yükselmektedir. Besin ve besin öğelerinin vücuttaki inflamatuar süreç üzerine doğrudan etkisi bulunmakta olup, fiziksel aktivite ile beraber anti-inflamatuar etkili bir diyet kronik hastalık riskinin düşürülmesi açısından önemlidir.This study was conducted on 27 adult males and 23 adult females with chronic conditions (obesity, Type 2 Diabetes, hypertension, hyperlipidemia, cardiovascular diseases) to investigate the inflammatory index of their diets. Data were collected through face-to-face interviews using a questionnaire, and anthropometric measurements and dietary records were obtained. The collected data were analyzed using SPSS 22, with a predetermined level of statistical significance set at p < 0.05. According to the Waist-to-Hip Ratio (WHR), 55.6% of male participants and 78.3% of female participants were in the very high-risk group. While 59.3% of male participants consumed three main meals per day, only 34.7% of female participants followed the same pattern. The diets of individuals were classified into three quartiles based on the inflammatory index score: the first quartile (Q1) represented an anti-inflammatory diet, the second quartile (Q2) represented a diet with no effect on inflammation, and the third quartile (Q3) represented a pro-inflammatory diet. For male participants, 40.7% had an anti-inflammatory diet (Q1), 40.7% had a diet with no effect on inflammation (Q2), and 18.6% had a pro-inflammatory diet (Q3). Among female participants, 8.7% had an anti-inflammatory diet (Q1), 56.5% had a diet with no effect on inflammation (Q2), and 34.8% had a pro-inflammatory diet (Q3). The average intake of E vitamin, thiamine, niacin, B6 vitamin, folate, C vitamin, magnesium, zinc, caffeine, fiber, and green-black tea, which have anti-inflammatory effects, was lower in individuals consuming a pro-inflammatory diet (Q3) compared to those with no effect on inflammation (Q2) and those with an anti-inflammatory diet (Q1) (p < 0.05). Individuals with an anti-inflammatory diet (Q1) had higher average consumption of monounsaturated, polyunsaturated, and omega-3 fatty acids compared to others (p < 0.05). The consumption of these nutrients showed an anti-inflammatory effect, reducing the dietary inflammatory score.There was no significant relationship between individuals' average values of triglycerides, total cholesterol, LDL, HDL, CRP, and the quartiles of the Dietary Inflammatory Index (DII) (p > 0.05). However, a significant relationship was found between individuals' Fasting Blood Sugar (FBS) and DII scores (p < 0.05), indicating that as the DII score increased, FBS values also increased. The direct impact of nutrients and food components on the inflammatory process in the body, along with physical activity, is crucial for reducing the risk of chronic diseases
Vardiyalı çalışan sağlık personelinin serum nesfatin-1 düzeyi ile sirkadiyen ritim, enerji gereksinimi ve beslenme durumu ilişkisinin değerlendirilmesi
Get PDFVardiyalı çalışan bireylerde sirkadiyen sistem bozulması, uyku düzensizliği ve devamında meydana gelen enerji dengesi değişikliği, beslenme bozukluğu durumu olağandır. Beslenme zamanı değişimi açlık tokluk fizyolojisini ve hormonları da etkilemektedir. Bu çalışmada vardiyalı ve sadece gündüz çalışan sağlık personelinin serum nesfatin-1 düzeyi, sirkadiyen ritmi, beslenme durumu, enerji gereksinimi değerlendirilmesi ve iki gruptan alınan verilerin kıyaslanması amaçlanmıştır. Araştırma tanımlayıcı ve kesitsel klinik çalışmadır. SANKO Üniversitesi Hastanesi'nde vardiyalı çalışan (n:38) ve yalnız gündüz çalışan (n:36) 20-45 yaş aralığında (yaş ortalama standart sapma değerleri) toplam 74 sağlık personeli ile yürütülmüştür. Çalışmada karıştırıcı faktörleri dışlamak için iki çalışma grubu da yaş, cinsiyet ve beden kütle indeksi (BKİ) yönünden benzer seçilmiştir. Araştırmacı yüz yüze görüşme yoluyla katılımcıların genel bilgileri, beslenme alışkanlıkları, fiziksel aktivite düzeyi, Pittsburgh Uyku Kalite İndeksi (PUKİ), Algılanan Stres Ölçeği (ASÖ) ve besin tüketim sıklığı verileri belirlenmiş, antropometrik ve indirekt kalorimetre (FitMate) ile DMH (dinlenme metabolik hızı) ölçümleri yapılmış, 3 gün süre ile 24-saatlik besin tüketim kaydı alınmıştır. Gündüz çalışanlardan çalışma saatinde ve vardiyalı çalışanlardan nöbet çıkışında nesfatin-1 analizi için 5 mL kan alınmıştır. Gündüz çalışanların her iki cinsiyette öğün atlama oranı (p<0,05), gündüz çalışan erkeklerin, vardiyalılardan ara öğün tüketme oranı daha yüksektir (p<0,05). Gündüz çalışanların vücut yağ kütlesi ve yüzdesi vardiyalı çalışanlardan daha yüksektir (p<0,05). Vardiyalı çalışanların gündüz çalışanlardan uyku kalitesi daha kötü, stres düzeyleri daha yüksektir (p<0,05). Vardiyalı çalışanların protein alımı gündüz çalışanlardan daha yüksektir (p<0,05). Vardiyalı çalışan erkeklerin stres ve serum nesfatin-1 düzeyi anlamlı pozitif korelasyon göstermektedir (p<0,05). Her iki çalışma grubunda da serum nesfatin-1 düzeyi ile uyku kalitesi, RMR değeri, fiziksel aktivite düzeyi arasında anlamlı fark görülmemiştir (p<0,05). Vardiyalı çalışanlarda serum nesfatin-1 düzeyi anlamlı fark göstermemiş ancak uyku kalitesi, stres düzeyi ve beslenme davranışı bozulma eğilimi göstermiştir. Vardiyalı çalışanların vardiyada beslenme imkanlarının gözden geçirilmesi ve beslenme planlaması ve izlenmesi için bir kurum diyetisyeninin desteğinin sağlanması sağlıklı beslenme ve yaşam kalitesi açısından önerilmektedir.Circadian system disruption, sleep irregularity, subsequent changes in energy balance, and malnutrition are common in individuals working in shifts . The change in feeding time also affects hunger and satiety physiology and hormones. In this study , it was aimed to evaluate the serum nesfatin-1 level, circadian rhythm, nutritional status and energy requirements of healthcare personnel working in shifts and only during the day and to compare the data obtained from the two groups. The research is a descriptive and cross-sectional clinical study. It was conducted at SANKO University Hospital with a total of 74 healthcare personnel between the ages of 20-45 (age average standard deviation values) who work in shifts (n:38) and only during the day (n:36). In order to exclude confounding factors in the study, both study groups were selected to be similar in terms of age, gender and body mass index (BMI). The researcher collected the participants' general information, nutritional habits, physical activity level, information through face-to-face interviews. Pittsburgh Sleep Quality Index (PSQI), Perceived Stress Scale (PSQ) and food consumption frequency data were determined, DMH (resting metabolic rate) measurements were made with anthropometric and indirect calorimetry ( FitMate ), and a 24-hour food consumption record was taken for 3 days. 5 mL of blood was taken for nesfatin-1 analysis from day workers during working hours and from shift workers after shift work . Daytime workers have a higher rate of skipping meals in both genders (p<0.05), and men working during the day have a higher rate of consuming snacks than shift workers (p<0.05). Body fat mass and percentage of daytime workers are higher than shift workers (p<0.05). Shift workers have worse sleep quality and higher stress levels than day workers (p<0.05). Protein intake of shift workers is higher than day workers (p<0.05). Stress and serum nesfatin-1 levels of men working shifts show a significant positive correlation (p<0.05). There was no significant difference between serum nesfatin-1 level and sleep quality, RMR value, and physical activity level in both study groups (p<0.05). Serum nesfatin-1 level did not show a significant difference in shift workers, but sleep quality, stress level and nutritional behavior tended to deteriorate. It is recommended to review the nutrition opportunities of shift workers and to provide support from an institutional dietitian for nutrition planning and monitoring in terms of healthy nutrition and quality of life
Some applications and maximum principles for multi-term time-space fractional parabolic Monge-Ampère equation
Get PDFThis study first establishes several maximum and minimum principles involving the nonlocal Monge-Amp & egrave;re operator and the multi-term time-space fractional Caputo-Fabrizio derivative. Based on the maximum principle established above, on the one hand, we show that a family of multi-term time-space fractional parabolic Monge-Amp & egrave;re equations has at most one solution; on the other hand, we establish some comparison principles of linear and nonlinear multi-term time-space fractional parabolic Monge-Amp & egrave;re equations
Glocal touches in digital art
No full textDigitalization, it generally refers to a social process of transition from analog to digital technology. The ability of digital technology to transmit, protect, compress and reproduce information/data in a very short time has initiated digitalization processes by transforming the concepts of time, space and speed. In this process, art types, exhibition and presentation techniques based on digital technology have emerged in art. The acceleration of digitalization processes has also accelerated globalization processes, and it has been emphasized by thinkers that globalization is based on digital technology. Globalization is economic, cultural, political, social, etc. It has affected all areas of life. In the cultural field, types of globalization as cultural homogenization and cultural heterogeneization have been discussed. The resemblance of cultures to each other has been examined under the heading of homogenization, and the recognition and discovery of cultural differences has been examined under the heading of heterogeneity. Sociologist Roland Robertson proposes the term 'glocalization', a linguistic mixture of globalization and localization, instead of the term globalization, and use of the term increases in the 1990s. In glocalization, both globalizing and localizing tendencies coexist simultaneously. In order to talk about a glocal approach in the art discipline, the work of art must consist of global and local components, which are the two key elements of glocalization. From an art perspective, glocal approaches are a synthesis that combines local identity or local values with contemporary art elements. In this study, the Gates of Infinity NFT Exhibition, in which artists Hakan Y & imath;lmaz and Seyd Ahmet combined traditional tile patterns with special algorithms and turned them into a collage, was chosen as an example. Two components of glocalization; Traditional motifs, which are local design elements, and global presentation techniques are brought together in the exhibition. In the Gates of Infinity exhibition exhibited at the Metropolitan Museum, Side Ancient Theater and Bursa Zindankap & imath; Gallery, the combination of traditional elements with global communication tools and presentation techniques was considered as a glocal approach in digital art. It has been seen that glocal touches in art are instrumental in the protection, promotion and dissemination of cultural values
Development software program for finding photovoltaic cell open-circuit voltage and fill factor based on the photovoltaic cell one-diode equivalent circuit model
Get PDFThe photovoltaic (PV) cell is the smallest building block of the PV solar system and produces voltages between 0.5 and 0.7 V. It acts as a current source in the equivalent circuit. The amount of radiation hitting the cell determines how much current it produces. The equivalent circuit of an ideal PV cell consists of a diode and a parallel current source. In order to express losses in applications, series and parallel resistance are added to the ideal equivalent circuit of the PV cell. There are many equivalent circuits in the literature for modeling the equivalent circuit of a PV cell. The single-diode equivalent circuit is the most widely used model because of its simplicity and ease of analysis. There are several methods available to estimate and analyze the parameters of PV cell models, such as Newton Raphson method, Lambert-W function, etc. In this study, the Newton Raphson method was used to find the equivalent circuit parameters of a PV cell. Fill factor is used to determine the quality of electricity generated by the photovoltaic cell. Open-circuit voltage is the maximum voltage value that the PV cell can transmit. The analysis of PV cell fill factor and open-circuit voltage was carried out using the developed software program. Then, the open-circuit voltage and fill factor were found using the software program prepared in MATLAB and given in Appendix. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature