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Managing Side Effects of Breast Cancer Treatment
No full textThis book comprehensively addresses various aspects of breast cancer survivorship issues, emphasizing the importance of interdisciplinary teamwork in their management. What sets this work apart is its collaborative approach, incorporating insights from diverse healthcare professionals. With increasing survival rates and prolonged disease-free periods, there is a strong need in managing breast cancer treatment in the short and long-term. This book underscores the necessity of addressing often overlooked or underestimated issues during the survivorship phase, contributing to enhance the knowledge from both the patient and healthcare provider perspectives. The book’s content is thoughtfully organized to ensure accessibility, targeting not only specialized readers but also undergraduate health professional students, including physical therapists and nurses, who intend to delve deeper into the field of breast cancer care. This book will be an invaluable guide not only for healthcare professionals such as oncologists, hematologists, surgeons, physical therapists, nurses, nutritionists, and psychologists, but also for undergraduate students pursuing bachelor’s degrees in these fields. Additionally, it offers valuable insights and support to breast cancer survivors on their journey to recovery. © 2025 Elsevier B.V., All rights reserved
Knowledge levels of obstetricians and gynecologists on deep vein thrombosis
No full textObjectives: The aim of this study was to evaluate the level of knowledge of obstetricians and gynecologists about deep vein thrombosis (DVT) in pregnancy. Methods: A cross-sectional questionnaire comprising 12 items was administered to obstetricians and gynecologists employed at a tertiary care hospital between January 2024 and March 2024. Following a reliability analysis, a DVT questionnaire scale was developed, which was subsequently evaluated across three sub-dimensions: (1) General Disease Knowledge (F1), (2) Medical Treatment Knowledge (General) (F2), and (3) Anticoagulant Knowledge Level (F3). Results: A total of 163 participants were evaluated in the study, with a mean age of 32.33±5.75 years. Among these individuals, 107 (65.6%) were female and 56 (34.3%) were male. Additionally, 72 (44.2%) of the participants were classified as resident physicians. The scores for the sub-dimensions of the DVT scale were as follows: 2.25±1.03 for (F1), 1.33±0.72 for (F2), and 2.53±1.09 for (F3). Notably, (F3) of the resident physicians was found to be significantly lower than that of the specialist/faculty member group, with a P-value of less than 0.017. Conclusions: The study demonstrated that the knowledge levels of obstetricians and gynecologists fell below the established proficiency threshold. This deficiency is believed to stem from inadequate understanding of the differentiation between superficial and deep vein thrombosis, the management of anticoagulant therapy during pregnancy, and post-thrombotic syndrome. Enhancing awareness in these areas may improve patient outcomes, reduce reliance on cardiovascular surgery consultations, and alleviate clinical workload
Gender Prediction Using Machine Learning Algorithms with Parameters Obtained from Calcaneus
No full textBackground: Partial or total disruption of body integrity may occur in cases such as war, natural disasters and accidents. In such cases, the importance of the calcaneus bone, which has a hard and minimal structure, increases for identification. With this hypothesis, the aim of this study is to estimate gender from the calca- neus by utilising the current approach of machine learning (ML) algorithm. Materials and Methods: The study was performed on X-Ray images of 200 female and 200 male subjects aged 18-65 years. Maximum length, facies articularis cuboidea height, maximum width, body width, mini- mum length, anteroposterior length of the calcaneus, posterior facet angle, anterior angle of the cuboid facet of the calcaneus, facet height, posterior facet length, anterior proces length, calca neus inclination angle, talocalcaneal angle, Böhler angle, Gissane angle and calcaneus tuber angle were measured. Then the obtained data were used in the input of ML algorithms. Results: As a result, a highly accurate and reliable sex prediction rate between 0.86-0.91 was obtained with ML algorithms. In addition, it was found that the maximum width of the calcaneus parameter made the highest contribution to sex prediction among the parameters with SHapley Additive exPlanations. Conclusions: As a result of our study, it was found that calcaneus with minimal and rigid structure provided high accuracy in terms of gender prediction using ML algorithms. In this respect, we think that this study will be a reference for forensic and morphometric studies
Tunable luminescence and structural modifications in Eu3+/Li+ Co-doped YBa3(BO3)3 phosphors for LEDs
No full textEu3+-doped and Eu3+/Li+ co-doped YBa3(BO3)3 (YBBO) phosphors were synthesized via a microwave-assisted solgel combustion method for warm white LED applications. Li+ co-doping improved crystallinity and luminescence efficiency. XRD with Rietveld refinement confirmed single-phase YBBO with lattice modifications due to doping. SEM-EDS analysis revealed improved particle densification and uniformity, while FTIR and Raman spectra confirmed alterations in the borate network. Photoluminescence studies showed a dominant red emission at 611 nm. The intensity corresponding to 0.05 mol Eu3+ doping was approximately 8.38-fold higher than that of the 0.005 mol Eu3+ sample, indicating enhanced luminescence efficiency before the onset of concentration quenching. The phosphor exhibited high color purity (88.3 %) based on CIE coordinates, making it suitable for color evaluation over CCT. Time-resolved PL measurements showed prolonged lifetimes and decreased non-radiative decay. These results demonstrate the potential of YBBO:Eu3+/Li+ as a highly efficient red-emitting phosphor for next-generation optoelectronic and solid-state lighting applications.Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia [PNURSP2025R16]We express our gratitude to the Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2025R16) , Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
Multiplicity dependence of charm baryon and charm meson production in pPb collisions at ?SNN=8.16 TeV
No full textMeasurements of the production yields of charm baryons (Lambda(+)(c)) and charm mesons (D-0) in proton-lead collisions at a nucleon-nucleon center-of-mass energy of 8.16 TeV are presented. The data were collected in 2016 with the CMS experiment and correspond to an integrated luminosity of 186 nb(-1). The Lambda(+)(c) baryon is reconstructed from the decay channel Lambda(+)(c) -> K(S)(0)p, while the D-0 meson is reconstructed via D-0 -> K- pi(+). The Lambda(+)(c) baryon and D-0 meson yields are extracted in several charged-particle multiplicity classes. No strong multiplicity dependence of the Lambda(+)(c) -to-D-0 yield ratio is observed, unlike the observed strange baryon to strange meson yield ratio of Lambda/(Lambda) over bar to K-S(0), which shows a strong multiplicity dependence. This observation indicates different mechanisms for the multiplicity evolution of hadronization processes for charm and strange quarks and provides new constraints to the understanding of heavy flavor production and collectivity in small collision systems.FWF; FNRS; FWO (Belgium); CNPq; CAPES; FAPERJ; FAPERGS; FAPESP (Brazil); BNSF (Bulgaria); MOST; NSFC (China); CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG [MoER TK202]; Academy of Finland; MEC; CEA; CNRS/IN2P3 (France); SRNSF; BMBF; DFG; HGF (Germany); NKFIH (Hungary); DAE; DST; IPM; SFI (Ireland); INFN (Italy); NRF (Republic of Korea); MES (Latvia); MOE; UM (Malaysia); BUAP; UASLP-FAI (Mexico); PAEC (Pakistan); FCT (Portugal); MESTD (Serbia); PCTI (Spain); Swiss Funding Agencies (Switzerland); NSTDA; TUBITAK; DOE; NSF (USA); Marie-Curie program; European Research Council; Horizon 2020 Grant [675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207]; COST Action [CA16108]; Leventis Foundation; Alfred P. Sloan Foundation; Alexander von Humboldt Foundation; Science Committee [22rl-037]; Belgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); FWO (Belgium) under the Excellence of Science - EOS [30820817]; Beijing Municipal Science & Technology Commission [Z191100007219010]; Fundamental Research Funds for the Central Universities (China); Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; Shota Rustaveli National Science Foundation [FR-22-985]; Deutsche Forschungsgemeinschaft (DFG) [EXC 2121, 390833306, 400140256 - GRK2497]; Hellenic Foundation for Research and Innovation (HFRI) [2288]; Hungarian Academy of Sciences [K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020-2.2.1-ED-2021-00181, TKP2021-NKTA-64]; Council of Science and Industrial Research, India; ICSC - National Research Center for High Performance Computing, Big Data and Quantum Computing - NextGenerationEU program (Italy); Latvian Council of Science; Ministry of Education and Science [2022/WK/14]; National Science Center [Opus 2021/41/B/ST2/01369, 2021/43/B/ST2/01552]; Fundacao para a Ciencia e a Tecnologia [CEECIND/01334/2018]; National Priorities Research Program by Qatar National Research Fund; ERDF a way of making Europe [MDM-2017-0765]; Programa Severo Ochoa del Principado de Asturias (Spain); National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation [B39G670016]; Kavli Foundation; Nvidia Corporation; Welch Foundation [C-1845]; Weston Havens Foundation (USA)We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MOST, and NSFC (China); Minciencias (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG, RVTT3 and MoER TK202 (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LMTLT (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, Conahcyt, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MoSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and The European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207, and COST Action CA16108 (European Union); the Leventis Foundation; The Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Science Committee, project no. 22rl-037 (Armenia); the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the Excellence of Science - EOS - be.h project n. 30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010 and Fundamental Research Funds for the Central Universities (China); The Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Shota Rustaveli National Science Foundation, grant FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DFG), among others, under Germany's Excellence Strategy - EXC 2121 Quantum Universe - 390833306, and under project number 400140256 - GRK2497; the Hellenic Foundation for Research and Innovation (HFRI), Project Number 2288 (Greece); the Hungarian Academy of Sciences, the New National Excellence Program - UNKP, the NKFIH research grants K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020-2.2.1-ED-2021-00181, and TKP2021-NKTA-64 (Hungary); the Council of Science and Industrial Research, India; ICSC - National Research Center for High Performance Computing, Big Data and Quantum Computing and FAIR - Future Artificial Intelligence Research, funded by the NextGenerationEU program (Italy); the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, contracts Opus 2021/41/B/ST2/01369 and 2021/43/B/ST2/01552 (Poland); the Fundacao para a Ciencia e a Tecnologia, grant CEECIND/01334/2018 (Portugal); the National Priorities Research Program by Qatar National Research Fund; MCIN/AEI/10.13039/501100011033, ERDF a way of making Europe, and the Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu, grant MDM-2017-0765 and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation, grant B39G670016 (Thailand); the Kavli Foundation; the Nvidia Corporation; the Super-Micro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA)
Heari·ng aid is an electronic device that helps individuals whohave hearing loss, to hear sounds around the environmentmuch better
No full textİşitme cihazları, işitme kaybı yaşayan bireylerin çevredeki sesleri daha iyi duymalarına yardımcı olan elektronik cihazlardır. Kullanılan ek parçalar, cihazın performansını ve kullanıcı memnuniyetini doğrudan etkileyebilmektedir. Bu bağlamda, işitme cihazlarında ''kulak kalıbı'' ve ''dom'' gibi bileşenlerin kullanımı, işitme cihazı kazancını ve genel performansını arttırmada kritik bir role sahiptir. Kulak kalıbı ve dom kullanımının işitme cihazı kazancına etkisi üzerine yapılan çalışmalar, her iki yönteminde farklı işitme kaybı türleri ve derecelerine göre avantaj ve dezavantaj sunduğunu göstermektedir. Kalıp ve domların görevi sesleri amplifiye ederek işitme kaybını telafi etmeye çalışmak ve bireylerin günlük hayatta daha etkili iletişim kurmalarına olanak tanımaktadır. Amplifiye edilmiş bu ses, kulak arkası işitme cihazlarında kullanılan, kulak kalıbı yardımı ile dış kulak yoluna iletir ve işitme performansı güçlendirilir. Literatürde kulak kalıbı teknolojisiyle ilgili çalışmalarda amaç, işitme cihazı tarafından yükseltilmiş olan bu seslerin azami fayda sağlayacak şekilde kullanıcıya iletilmesidir. Diğer bir deyişle daha iyi duyurmaktır. Kulak kalıpları yumuşak (biopor) ve sert kulak kalıbı olmak üzere ikiye ayrılır. (Ataç, 2004, s. 393-402)Çalışma, işitme cihazlarının performansını, konforunu ve kullanıcı memnuniyetini artırmak amacıyla bu teknolojilerin kullanımının önemini vurgulamaktadır. Çalışma, kulak kalıbı ve dom teknolojisinin işitme cihazlarının akustik performansına, olan etkilerini anlamak için bir çerçeve sunmayı hedeflemektedir. Araştırmamızda gereç ve yöntem, denekler işitme kayıpları hafif dereceden, çok ileri dereceye kadar olan, sensörinöral tip işitme kaybı olan kullanıcı adaylarına yer verilmiştir. 35-65 yaş gurubu arasında olmak üzere 30 gönüllü ile yürütülen çalışma gönüllülerin mevcut işitme düzeyleri test edilmiştir. İşitme kayıplarına uygun cihaz modelleri ile işitme cihazı uygulaması yapılmıştır. Kullanıcıların ''kulak kalıbı'' ve ''dom'' uygulaması ile ayrı ayrı serbest alan eşikleri bulunmuştur. Veriler arasındaki ilişki bağımsız örneklem t testi ile değerlendirilmiştir. Yapılan bağımlı örneklem t-testi sonuçlarına göre, iki yöntem arasında istatistiksel olarak anlamlı bir fark olduğu belirlenmiştir. Bu sonuçlar ışığında kişiselleştirilebilen kulak kalıbı uygulamasının işitme kaybını örtmede ve İşitme eşiklerinin iyileşmesinde dom uygulamasına göre daha avantajlı olduğu söylenebilir.Used articulation components can directly influence the device's performance and client satisfaction. Within this context, the usage of "earmold" and "dome" like constituents in hearing aids, have a critical role in increment impact in hearing aid and general performance increase. The research conducted on dome usage and increment impact in hearing aids indicates that both modalities show advantages and disadvantages varying on different types and degrees of hearing loss.The research underlines the importance of the usage of these technologies in the performance, comfort, and client satisfaction of the hearing aids. The research aims to show a framework for understanding the effects of earmold and dome technology on acoustic performance. Material/Procedure: In the study that was conducted with 30 volunteers between the ages of 35-65, the current hearing levels of the volunteers were tested. A suitable prototype hearing aid implementation was made for hearing loss. Field-free thresholds of the clients were found individually with the implementation of "earmold" and "dome". The correspondence between the data was evaluated with an independent cross-section T-Test. Findings: From the conducted analysis, the field-free threshold test scores (X±? Ss: 19,05±5,38) of hearing aid implementation with mold and the field-free threshold test scores (X±? Ss: 23,78±8,08) of hearing aid implementation with dome were cross-matched. The difference between the two groups was determined to be significantly outliers (t=-2,14; sd=37,00; p<0,05). This result sets forth the procedure of hearing aid implementation with mold was better in the field-free threshold tests. Discussion and Conclusions: This research analyzed whether the dome or mold used in hearing aid implementation created significant discrepancies in the field-free threshold. Hearing aids, when compared to, the field-free thresholds in the implementation with mold and fieldfree thresholds in the implementation with dome, the hearing aid implemented with mold had better fieldfree thresholds that were observed and outliered significantly. In conclusion, the implementation of mold is far more advantaged, by means of covering up hearing loss and thresholds getting better than the implementation of dome
Judd-Ofelt analysis and photoluminescence behavior of Tb3+-activated K7SrY2(B5O10)3 phosphors modified with alkali co-dopants for solid-state lighting applications
No full textIn this study, the structural and luminescent properties of alkali-modified K7SrY2(B5O10)(3) phosphors activated with Tb3+ ions were systematically investigated for solid-state lighting and photonic applications. A combination of X-ray diffraction (XRD) with Rietveld refinement, vibrational spectroscopy (FTIR and Raman), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) confirmed that the trigonal R32 structure of the host lattice is retained upon doping and co-doping, with Tb3+ ions preferentially occupying Y3+ sites. Photoluminescence (PL) studies revealed intense green emission centered at 540 nm (D-5(4) -> F-7(5) transition), with maximum intensity observed at 3 wt% Tb3+, beyond which concentration quenching occurred. The critical interaction distance (similar to 28 & Aring;) and interaction parameter (theta approximate to 5.55) confirmed that dipole-dipole interactions govern the quenching mechanism. Co-doping with Li+ and Na+ resulted in a significant enhancement in both emission intensity and decay lifetime, with Li+ co-doping at 3 wt% yielding an similar to 11.7-fold enhancement and increasing the average lifetime from 1.48 ms to 1.95 ms. This corresponds to a high radiative efficiency of similar to 93 %, indicating effective suppression of non-radiative losses. These enhancements were attributed to improved crystallinity, suppression of non-radiative defects, and modulation of the local crystal field symmetry. Judd-Ofelt analysis of the well-resolved emission bands yielded Omega(4) and Omega(6) intensity parameters of 0.96 x 10(-20) and 1.12 x 10(-20) cm(2), respectively, indicating moderate asymmetry in the ligand environment. The theoretical radiative lifetime (similar to 1.10 ms) showed excellent agreement with experimental values, indicating high radiative efficiency with minimal non-radiative losses. CIE chromaticity coordinates reached (0.3782, 0.6081) for 3 wt% Tb3+ and shifted toward the blue-green region (e.g., (0.2791, 0.4284) with Li+), demonstrating tunable and stable green emission. This work demonstrates the potential of Li+/Na+ co-doped KSYBO:Tb3+ phosphors as efficient, color-stable, and structurally robust green-emitting components for phosphor-converted white LED and optical display devices.Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia; Scientific Research Project Unit of Manisa Celal Bayar University [2024/122]; Scientific and Technological Research Council of Turkey (TUBITAK) [1001-223M036]; [PNURSP2025R16]We would like to express our sincere gratitude to the Princess Nourah bint Abdulrahman University Researchers Supporting Project (Project No. PNURSP2025R16) , Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia. This study was also financially supported by the Scientific Research Project Unit of Manisa Celal Bayar University (Project No. 2024/122) and by the Scientific and Technological Research Council of Turkey (TUBITAK, Project No. 1001-223M036)
Microcontroller Realization of a Novel 4D Hyperchaotic System and Its Autonomous Mobile Robot Application
No full textchaotic systems offer benefits in diverse domains, including encryption and communication systems, particularly in the upkeep of intricate and safeguarded systems.This study introduces a new hyperchaotic system with four dimensions (4D), seven parameters, and four quadratic non-linear terms. An extensive analysis is conducted on the suggested hyperchaotic system to investigate its dynamic properties, such as chaotic attractors, stability of equilibrium points, spectrum of Lyapunov exponents (LE), bifurcation diagram, etc. The proposed system is validated both by experimental tests using an embedded hardware STM32 microcontroller and MATLAB simulations. The microcontroller-based chaotic systems proposed in the literature and the given hyperchaotic system in this study are compared in a tabular form. The outcomes of these trials constantly correspond, offering theoretical validation for the utilization of this hyperchaotic system in real-world applications. An application example of an autonomous mobile robot (AMR) driven by the presented hyperchaotic system is provided in this work, as efficient and fast terrain exploration is a crucial problem in AMR path planning research
Roma Hukukunda Kamu Arazileri (Ager Publicus)
No full textRoma hukukunda ager publicus, savaş ganimeti olarak elde edilen veya isyan eden topluluklardan el konulan toprakları ifade eder. Bu topraklar devletin mülkiyetinde kalmakla birlikte farklı yollarla bireylerin kullanımına sunulmuştur. Erken Cumhuriyet döneminde patricius ve pleb sınıfları arasında ager publicus'un paylaşımı hususunda çatışmalar yaşanmış ve bu mücadele Roma’nın siyasal yapısını derinden etkilemiştir. Romalılar savaş ganimeti olarak elde ettikleri arazileri genellikle vergilendirmiş ya da sembolik bedellerle Roma vatandaşlarına tahsis etmiş, ancak bu toprakların mülkiyeti devlette kalmıştır. Ager privatus vectigalisque olarak nitelendirilen araziler özel kişilere tahsis edilmiş ve bunlardan önemli ölçüde vergi toplanmıştır. MÖ 4. yüzyıldan itibaren Roma vatandaşlığının geniş kitlelere tanınması, ager publicus üzerindeki politikaları da etkilemiş; bu toprakların Latin kolonileri aracılığıyla hem askerî hem idarî amaçlarla kullanımı genişlemiştir. II. Pön Savaşı sonrasında Roma’nın toprak politikası büyük ölçüde değişmiştir. Bu savaş sırasında Roma'ya ihanet eden toplulukların topraklarına el konularak kamu arazisi haline getirilmiştir ve bunlar vergilendirme veya kiralama ile kullanıma açılmıştır. Roma’nın koloni politikası da bu dönemde dönüşüme uğramış, küçük merkezlerin yerini daha büyük ölçekli yerleşim merkezleri almıştır. Ancak hızlı nüfus artışı ve çeşitli siyasal kaygılar, zaman içinde toprak dağıtımını sınırlandırma gereğini doğurmuştur. Roma'da ager publicus’un dağıtımı ve statüsü üzerine alınan kararlar çoğunlukla sistematik olmaktan uzak kalmış, dönemin siyasal ihtiyaçlarına göre şekillenmiştir. Toprakların çoğunluğunun sınırlı bir elit grubuna tahsis edilmesi, Cumhuriyet’in son yüzyıllarında sosyal ve ekonomik krizlerin derinleşmesine yol açmıştır. Ager publicus’un kamu yararı için etkin biçimde kullanılamaması, bireysel çıkarların kamu menfaatinin önüne geçtiği anlarda Cumhuriyet rejiminin tıkanma nedenlerinden biri haline gelmiştir
Sustainable Dye-Sensitized Solar Cells Enhanced with CdS and Natural P. pterocarpum Dye for Dual Energy and Low-Light Sensing: The Synergistic Role of ZnO Nanorods and Natural Dyes
No full textThis study presents a novel and sustainable approach to dye-sensitized solar cell (DSSC) design by integrating a natural dye extracted from Peltophorum pterocarpum with CdS co-sensitization and ZnO nanorod-modified TiO? photoelectrodes. The fabricated DSSCs were enhanced through the integration of ZnO nanorods on TiO? photoelectrodes and further modified with CdS co-sensitization to boost their photovoltaic and photodetection capabilities. The devices were evaluated under a broad range of light intensities (100 to 0.01 mW/cm²), revealing dual functionality: efficient photovoltaic operation under standard illumination and superior sensitivity under ultra-low light. Under standard illumination, the highest efficiency (8.15%) was achieved with N719 dye and ZnO/TiO? electrodes. However, the P. pterocarpum-based cells also exhibited competitive performance, reaching 6.92% with CdS and ZnO enhancement. Remarkably, under ultra-low light (0.01 mW/cm²), the natural dye-based DSSCs demonstrated power conversion efficiencies exceeding 18%, rivaling commercial dye systems. These results highlight the synergistic role of ZnO nanorods and CdS in enhancing charge transport and light absorption, while also showcasing the viability of natural dyes for eco-friendly, low-cost optoelectronic applications. This study is among the first to demonstrate the synergistic integration of P. pterocarpum natural dye, CdS co-sensitization, and ZnO nanorods in DSSCs and in this research, sustainable natural dye utilization with structural nanomaterial engineering is uniquely bridged to develop DSSCs capable of dual functionality under both standard and ultra-low light conditions