bluuebunny/crossref_metadata_2025 huggingface dataset:
EFFECT OF SUPPLEMENTATION FENUGREEK OIL TO THE DIET ON THE PHYSIOLOGICAL, ANATOMICAL AND HISTOLOGICAL TRAITS OF BROILERS
Authors: Hasanain N. Ezzat
Published: February 2023

This study was aimed to evaluate the effect of supplementing fenugreek seed oil to the diet on the physiological, anatomical and histological characteristics of broilers. A total of 200 chicks one day-old of (Ross308) were used in this study and divided into 4 treatments, 5 replicate for each treatment by 10 chicks in each replicate. The treatments were T1(control diet) = without additives (basal diet), T2 = basal diet + 0.25 ml fenugreek oil /  kg, T3 = basal diet + 0.50 ml fenugreek oil /  kg and T4 = basal diet + 0.75 ml fenugreek oil /kg. The results showed   Fenugreek oil inclusion at levels 0.50 ml/kg exhibited significant decrease (P <0.05) in jejunum and ileum relative weight, villi height and increasing (P <0.05) heart relative weight for T3 compare with the other groups. T4 showed significant increased (P <0.05) in lactic acid bacteria count compare with control group (T1). Supplemented 0.25 ml/ kg of fenugreek oil resulted in increasing villi height, thickness and Epithelium thickness for duodenum as compared with control group. It was observed that  adding 0.25 ml/kg and 0.50 ml/kg  feed fenugreek oil  to the broiler chicken diet could be optimum level to enhance the productivity and histological characteristics of broiler.
PENGARUH PERSEPSI KEDISIPLINAN DIRI TERHADAP HASIL BELAJAR MATEMATIKA SISWA
Authors: Permatasari Besse Intan , Sari Tri Hariyati Nur Indah
Published: February 2023

Tujuan penelitian ini adalah untuk mengetahui apakah persepsi kedisiplinan diri memiliki pengaruh terhadap hasil belajar matematika siswa. Penelitian ini merupakan penelitian cross sectional survey dengan pendekatan kuantitatif. Sampel penelitian dipilih dari populasi (N = 64) secara random sebanyak sebanyak 55 siswa dengan berpedoman pada tabel Isaac & Michael. Instrumen yang digunakan adalah kuisioner persepsi kedisiplinan diri siswa yang telah melalui uji validitas dan memiliki reliabilitas tinggi dengan koefisien Alfa Cronbach sebesar 0,71. Sedangkan data mengenai hasil belajar matematika diperoleh dari ujian harian matematika. Data diolah menggunakan analisis statistik regresi linear sederhana dan hasil analisis menunjukkan bahwa sebanyak 7 siswa dengan persepsi kedisiplinan diri kategori rendah, 35 siswa kategori sedang, dan 13 siswa kategori tinggi. Persepsi kedisiplinan diri memiliki hubungan positif linear dengan hasil belajar matematika dan memberi konstribusi sebesar 31,8% dari variansi hasil belajar matematika (R = 0,564; R2 = 0,318; β1 = 1,679; p < 0,05). Penelitian ini menganjurkan untuk mengembangkan kedisiplinan diri dalam meningkatkan hasil belajar matematika siswa.
In Vivo Evaluation of Analgesic Activities of Dioscorea dumetorum (Kunth) Pax and Tragia benthamii Bak
Authors: Christy Akanji Olufunke
Published: February 2023

An analgesic is any member of the group of drugs used to achieve analgesia, relief from pain without loss of consciousness. Pain is one of the devastating health problems commonly treated with medicinal plants. Dioscorea dumetorum (Kunth) Pax (Family Dioscoreaceae) is one of the popular species of yam, usually found in Africa and mostly consumed in West Africa. Tragia benthamii Bak. is an herbaceous twining or trailing plant which belongs to the Euphobiaceae family. The plant is indigenous to Ivory Coast extending wide spread across Africa including Nigeria. This study investigated the analgesic activities of Dioscorea dumetorum and Tragia benthamii leaves’ methanol extract on mice. Acetic acid-induced writhing method was engaged. Thirty-two (32) healthy and energetic mice were grouped into eight (8) of four (4) mice. Indomethacin (25 mg/kg) was administered to the positive control group, negative control group received distilled water (10 ml/kg) while each extract treatment groups received 50, 100, 200 mg/kg respectively. Analgesic activities of the plants’ extract were assessed by counting the number of writhes for 30 minutes after a latency period of 5 minutes. Reduction in the number of writhes as compared to the control groups was considered as evidence for analgesic potential of the plants. In this study, the positive control (Indomethacin), D. dumetorum and T. benthamii significantly decreased the mean number of abdominal constrictions or writhes in a dose dependent manner following the order of 200>100>50 mg/kg. The result showed that the potency of the two plants’ extract was superior to that of Indomethacin but T. benthamii (200 mg/kg) exhibited higher analgesic activity. Values of reduction time in writhing were significantly different (P<0.05) among the treatments. This research revealed effective potential analgesic effects of D. dumetorum and T. benthamii which could be attributed to the presence of phytochemicals in them. Therefore, further studies to explain their mechanisms of action should be conducted to aid the discovery of new therapeutic agents for the treatment of pains.
Ethics in Nursing Research
Authors: Alkhunaizi Anwar Nader , Alhamidi Sami Abdulrahman
Published: February 2023

Nursing research ethics are the moral code that the researcher adheres to while carrying out research. Issues relating to ethics in nursing research and demonstrate how vital it is that exploitation of vulnerable groups is avoided. Vulnerable groups are defined as pregnant women, fetuses, children, people with mental disabilities, prisoners, and people from low socio-economic backgrounds (Horn et al., 2014). Informed consent, confidentiality, justice, anonymity, and beneficence are all significant when conducting research with vulnerable groups, as I will discuss.
Serum Levels of BDNF, TNF alpha, Caspaz-3, AChE, BChE in Patients with Brain Tumor
Authors: Tas Abdurrahim , Aycan Abdurrahman , Gurkan Gokhan , Cilingir Yeltekin Asli , El-Tekreti Sama-Amer Abbas , Aycan Nur
Published: February 2023

Objective: Brain tumor development mechanisms are still the subject of current research, and treatment models are improving. Our study aimed to investigate the association of cytokines with intracranial tumor types and grades and their usability in diagnosis and follow-up.
Material and Methods: This study included 48 individuals (24 brain tumors and 24 control groups). The blood samples were taken from the study groups, and biochemical analysis was performed. The groups were then compared for statistical significance.
Results: In our study, our aim was to investigate the relationship between enzyme levels and intracranial tumors in various pathologies and grades. We found a significant association between TNF-α, Caspase-3, and BChE enzymes, but this association was not observed for BDNF and AChE.
Conclusion: We measured the levels of various cytokines secreted in gliomas and other brain tumors and carried out our study to determine whether these measurements cause changes in the staging of the disease, their use as a diagnosis, and the length of stay. This study would shed light on more comprehensive studies on brain tumors.
Peningkatan Kemampuan Pemecahan Masalah Matematika Materi Lingkaran menggunakan Model Pembelajaran Berbasis Masalah Kelas VIII SMP Negeri 2 Tlogomulyo Tahun Pelajaran 2020/2021
Authors: Wulandari Nurul Azizah Desi
Published: February 2023

Peningkatan Kemampuan Pemecahan Masalah Matematika Materi Lingkaran menggunakan Model Pembelajaran Berbasis Masalah Kelas VIII SMP Negeri 2 Tlogomulyo Tahun Pelajaran 2020/2021”. Penelitian tindakan kelas ini didasari dari rendahnya kemampuan pemecahan masalah pada mata pelajaran matematika kelas VIII SMP Negeri 2 Tlogomulyo. Tujuan perbaikan pembelajaran adalah untuk meningkatkan kemampuan pemecahan masalah matematika kelas VIII SMP Negeri 2 Tlogomulyo. Peneliti melaksanakan perbaikan pembelajaran dengan menggunakan model Pembelajaran Berbasis Masalah (PBL) yang dilakukan dalam dua siklus. Materi yang digunakan dalam pembelajaran ini adalah materi lingkaran. Siklus I difokuskan pada sub materi Panjang Busur Lingkaran, sedangkan siklus II pada sub materi “Luas Juring Lingkaran”. Hasil yang diperoleh adalah penggunaan model Pembelajaran Berbasis Masalah pada materi Lingkaran dapat meningkatkan kemampuan pemecahan masalah siswa kelas VIII SMP Negeri 2 Tlogomulyo. Pada siklus I kemampuan pemecahan masalah siswa sebesar 60,94%, berikutnya pada siklus II sebesar 80,45%. Peningkatan kemampuan pemecahan masalah dari siklus I ke siklus II sebesar 19,51%.
Photocatalytic Route for Reduction of Color and Chemical Oxygen Demand from Dye-Containing Wastewater
Authors: Dhodapakar Rita , Rao N.N. , Pande S. P. , Kaul S. N.
Published: February 2023

The  color and chemical  oxygen demand arising from  Acid  Blue  I,   Rhodamine B and textile industry wastewater  containing vinyl sulphone-based  reactive dye are treated  using TiO,/ UV technique.  Color is found to be removed substantially during first one hour of irradiation of Acid Blue I  and  Rhodamine B systems.  The  rate  of  color  removal  from  textile  dyeing  industry wastewater  in  an  order  of  magnitude  lower  than  that  of  Acid  Blue  I   and  Rhodamine  B. Simultaneously,  the overall COO removal efficiencies  under aerated condition are found to  be 60% for Acid Blue I/ TiO in 2 hours, 90 % for Rhodamine  B/TiO,  in 4-5 hours and 45 % for wastewater/  TiO, in 3' hours.  The supplied air is found  to  enhance rate  of  color and COD removals.   The   results   suggested   that   some   stable   intermediates   are   formed   during phoooxidation of  these  dyes  and the  photocatalytic  degradation of  reactive  dye  containing wastewater is relatively slower.
Wirulencja populacji Puccinia striiformis sprawcy rdzy żółtej na pszenżycie w Polsce
Authors: Karska Katarzyna , Strzembicka Anna , Czajowski Grzegorz , Czembor Paweł
Published: February 2023

Rdza żółta powodowana przez grzyb Puccinia striiformis f. sp. (Westend) w ostatnich latach w coraz większym nasileniu występuje na zasiewach pszenżyta. W latach 2009 – 2011 przeprowadzono prace nad patogenicznością P. striiformis wobec linii pszenicy ze znanymi genami Yr, odmian pszenżyta i odmiany żyta Dańkowskie Złote. Określono częstość wirulencji 45 izolatów zebranych głównie w północno-zachodniej części Polski. W badanej populacji P. striiformis nie notowano izolatów zdolnych do porażenia linii z genami: Yr3+, Yr4+, Yr15 oraz kombinacji genów Yr5+Yr15, Yr7+Yr9. Niski poziom wirulencji, 6–25% obserwowano w stosunku do linii z genami: Yr1, Yr3, Yr5, Yr6, Yr9, Yr10, Yr17, Yr18, Yr24, Yr26, Yr27, Yr28, Yr32, YrSp oraz kombinacji genów: YrPr1+YrPr2, Yr2+Yr6+Yr25, Yr9+Yr27. W przypadku odmian pszenżyta zaobserwowano wysoki poziom wirulencji wobec: Dinaro, Grenado, Lamberto, Pizarro, Woltario i Marko. Nie notowano wirulentnych izolatów wobec odmian: Borwo, Pigmej i Zorro. Zauważono, że izolaty P. striiformis pochodzące z pszenżyta były wirulentne wobec odmiany żyta Dańkowskie Złote.
Charakterystyka rodów hodowlanych pszenżyta ozimego pod względem stopnia porażenia przez Puccinia triticina i Blumeria graminis
Authors: Czajowski Grzegorz , Karska Katarzyna , Strzembicka Anna
Published: February 2023

Oceniano porażenie rodów hodowlanych pszenżyta przez Puccinia triticina i Blumeria graminis w sezonach wegetacyjnych 2007/08–2011/12. Badania prowadzono w stadium siewki w szklarni i w stadium rośliny dorosłej w polu: w warunkach wspomaganej inokulacji zarodnikami Puccinia triticina w Grodkowicach i naturalnej inokulacji w Krzeczowicach. W przypadku Blumeria graminis w obydwu miejscowościach badania prowadzono w warunkach naturalnej inokulacji. Ogółem przebadano 250 form pochodzących z ośrodków hodowli pszenżyta w Polsce. Ocenę w fazie siewki prowadzono wg skali 5. stopniowej, w której stopnie 0, 1, 2 oznaczały odporność, natomiast 3 i 4 wrażliwość rośliny. W stadium rośliny dorosłej wykorzystano skalę 9.-stopniową, w której 9 oznacza wysoką odporność, a 1 — wysoką wrażliwość. Przeprowadzone badania ukazały zróżnicowanie badanego materiału pod względem stopnia porażenia przez Puccinia triticina i Blumeria graminis zarówno w stadium siewki w szklarni jak i rośliny dorosłej w polu. Badania umożliwiły wytypowanie 66 genotypów wysoce odpornych w skali 7–9 na porażenie przez obydwa patogeny. Wśród nich 5 odznaczało się odpornością w obydwu stadiach rozwoju rośliny. Spośród nich wybrano 11 genotypów, które charakteryzowały się odpornością przez okres 2–3 lat w Grodkowicach i Krzeczowicach i mogą być wykorzystane jako źródła odporności.
Nasiennictwo ziemniaka w Polsce: uwarunkowania przyrodnicze, odmianowe i rynkowe
Authors: Kostiw Michał
Published: February 2023

W Polsce zmieniają się uwarunkowania przyrodnicze, odmianowe i rynkowe mające wpływ na produkcję nasienną ziemniaka. Zmniejszający się areał uprawy ziemniaka sprawia, że zwiększa się izolacja przestrzenna między poszczególnymi plantacjami tej rośliny, w konsekwencji maleje liczba źródeł wirusów w środowisku. Zwiększa się powierzchnia plantacji nasiennych (koncentracja produkcji) oraz maleje presja niektórych gatunków mszyc, wektorów chorób wirusowych ziemniaka. Zmiany te są korzystne dla nasiennictwa. Jednocześnie wzrasta w nasiennictwie udział odmian podatnych na wirusy. Są to w większości odmiany hodowli zagranicznej. Ten czynnik utrudnia produkcję nasienną. Ważnym zadaniem jest odbudowa nasiennictwa ziemniaka w Polsce. Z czyn¬ników rynkowych najważniejsze znaczenie ma zwiększenie popytu na kwalifikowany materiał nasienny.
Edukasi Perilaku Hidup Bersih dan Sehat pada Anak Sekolah Masa Pandemi Covid-19 di Panti Asuhan Gotong Royong Yogyakarta
Authors: Hindriyawati Wiwin , Revika Era
Published: February 2023

Chairman of the Central Board of the Indonesian Pediatric Association (IDAI), said that Covid-19 cases in children in the country increased by 11-12 percent. During the pandemic, the number of deaths of children under five increased by 50 percent or there were 1,000 deaths in children every week. UGM epidemiologist, said that actually from the beginning children have a risk of being infected with sars cov-2. He mentioned that in DIY itself the first case of Covid-19 was in children.(1) Clean and Healthy Living Behavior (PHBS) is needed by students at school to avoid various diseases. one of them is washing hands with soap and clean water as well as healthy snacks.(2) The purpose of this service is to provide information and education about PHBS for orphanage children, so that they are able to have PHBS. The method used begins with opening, introduction, prayer, and presentation of health education materials, question and answer sessions, evaluation, games, door prizes, closing and group photos. The results of this activity, orphanage children understand PHBS, the orphanage management is helped because children have received information and provision of PHBS during the co-19 pandemic.
Refreshing Kader Posyandu Bayi dan Balita sebagai Upaya Peningkatan Pengetahuan dan Keterampilan di Puskesmas Tirto
Authors: Artanti Swasti , Ulya Ni'matul
Published: February 2023

Puskesmas is the spearhead of public health services which is very important because it improves the degree of public health. One of the efforts to accelerate the reduction of maternal and infant mortality rates is implemented in the Posyandu (Integrated Service Post) program. Posyandu is one of the platforms that can be used to prevent and overcome health problems in nutrition, maternal and child health, clean and healthy lifestyles, immunization and so on. Health cadres who are around the community must have a high level of knowledge about health that occurs in the community. The purpose of this community service is as a means of updating health knowledge, especially regarding maternal and infant health with a target number of 25 cadre participants. This activity was carried out with a pre test, material provision, discussion and post test. From this activity it can be seen that there are 17 cadres who are well informed from the previous only 10 people. The author hopes that the government through the Puskesmas can conduct continuous coaching and refreshing cadres.
Peningkatan Pengetahuan tentang Nutrisi yang Tepat pada Anak Usia Prasekolah
Authors: Sulistyorini Suci
Published: February 2023

Nutrition is one of the main determining factors in the quality of Human Resources. Providing poor nutrition, especially to children, will reduce the potential of community development resources. The low nutritional status of children will have a negative impact on improving the quality of human resources. Nutritional status can affect the physical condition and ability of students to follow the learning process, factors that can affect learning achievement, including biological factors, psychological and environmental conditions of students. The purpose of this activity is to increase the knowledge of the community, especially parents, about the importance of providing proper nutrition to preschool-aged children at Darma WanitaPersatuan Kindergarten, Dabuk Rejo , Lempuing OKI. The method in this community service is in the form of zoom (online) which was attended by 69 participants. The result of this activity was an increase in parental knowledge in providing proper nutrition to preschool-age children which can be seen from the post-test results. The conclusion from this activity is that there is an increase in parents' knowledge about the importance of providing proper nutrition according to the needs of preschool-aged children to support good health conditions and success in the learning process and learning achievement.
Pengetahuan Ibu Hamil tentang Senam Hamil di Puskesmas Medono Kota Pekalongan
Authors: Ulya Ni'matul , Jannah Miftachul
Published: February 2023

Pregnancy is a special condition for a woman as a prospective mother, because during pregnancy there will be physical changes that affect her life. Physical changes that occur sometimes even cause discomfort for the mother, one of which is lower back pain. The results of the study on pregnant women in various parts of Indonesia reached 60-80% of pregnant women experiencing back pain. One way to reduce lower back pain during pregnancy is by doing pregnancy exercises. This study aims to describe the knowledge of pregnant women about pregnancy exercise at the Medono Health Center. This research is quantitative descriptive. Knowledge of pregnant women about the meaning of pregnancy exercise in the sufficient category, as many as 19 respondents (63.2%), about the purpose of pregnancy exercise in the sufficient category as many as 18 respondents (60%), the benefits of pregnancy exercise in the less category as many as 11 respondents (36.6% ), contraindications for pregnancy exercise in the sufficient category were 17 respondents (56.7%), the time for carrying out pregnancy exercise was in the sufficient category as many as 16 respondents (53.2%) and pregnancy exercise movements in the sufficient category as many as 15 respondents (50%). With this research, it is hoped that pregnant women will explore more information related to pregnancy exercise so that the knowledge of pregnant women increases and midwives as health workers can always socialize about pregnancy exercise so that pregnant women know clearly what pregnancy exercise is and its overall benefits.
Pemberian Biskuit Tepung Ikan Teri (Stolephorus Commersonii) dan Tepung Daun Kelor (Moringaolefera) terhadap Peningkatan Kadar Volume ASI dan Berat Badan Ibu Nifas di Kota Palu
Authors: Arini Arini , Hutagaol Iin Octaviana
Published: February 2023

The puerperium or puerperium period is the period after labor is completed up to 6 weeks or 42 days. During the puerperium, the reproductive organs will slowly experience changes as they were before pregnancy. This change in the reproductive organs is called involution. Based on the 2018 Riskesdas data, the process of starting breastfeeding mostly occurs 1-6 hours after birth (35.2%) and <1 hour (early breastfeeding initiation) at 34.5%. Meanwhile, the lowest breastfeeding initiation occurred at 7-23 hours after birth, which was 3.7%. It can be seen that the coverage of exclusive breastfeeding in 2020 decreased by 1.10% compared to coverage in 2019 (57.77%). Almost all Puskesmas in the Palu City area have exclusive breastfeeding coverage >50%, and refer to the 2020 Ministry of Health Strategic Plan target of 40%. This study aims to analyse the influence of biscuits and flour from flour anchovies kelor against the increasing volume of breastfeeding on the parturition.The specific objectives of this study were: 1) making biscuits from anchovy flour and Moringa flour, 2) Determining the serving size of biscuits per serving, 3) Analyzing the effect of giving biscuits from anchovy flour and Moringa flour to increase the volume of breast milk in postpartum mothers. The research design used a quasi-experimental one group pre and post-test. The used the test t pairs, One at the research is mother parturition Palu in some 20 mother parturition .The subject of study is population research which were selected purposively on inclusion and exclusion. This research result indicates that any impact of biscuits flour anchovies (stolephorus commersonii) and flour leaves kelor (moringaolefera) against weight mother parturition ( p 0,006 ) and volume breastfeeding worth (p 0,000 ).
Fractionation and Enrichment Patterns in White Mica from Li Pegmatites of the Wekusko Lake Pegmatite Field, Manitoba, Canada
Authors: Benn David , Martins Tania , Linnen Robert
Published: February 2023

The Wekusko Lake pegmatite field in central Manitoba, Canada, is known for its multiple pegmatite dike occurrences, most remarkably its Li-rich pegmatites of economic importance. The Li-rich pegmatites from Wekusko Lake are the focus of this study and belong to the Green Bay group of the Wekusko Lake pegmatite field. These dikes were dated at ca. 1.78 Ga and were emplaced early during the D4 brittle–ductile deformational event. The results presented here describe in detail the pegmatite mineralogy, textures, and zonation of the Li-rich dikes of the Green Bay group, with emphasis on white mica chemistry. The aim of this study is to establish the nature and evolution of white micas from the Li-rich pegmatites of the Wekusko Lake pegmatite field in Manitoba. We aim to understand the differentiation mechanisms that allowed the high level of trace element enrichment observed in the white micas of the studied Li-rich pegmatites. Major and trace elements in white micas from a representative and well studied pegmatite dike were analyzed by electron microprobe and LA-ICP-MS. White mica compositions and textural evidence were used to define two different populations that seem to have been affected by magmatic processes (fractional crystallization) and a secondary episode of metasomatism. Fractional crystallization modeling of a granitic melt can explain some of the trace element enrichment, but extreme Cs enrichment cannot be explained via this mechanism. We interpret that many metasomatic white micas crystallized in boundary layers. Their compositions are controlled by the local melt composition, but aqueous fluids likely contributed to the development of the white mica textures. The substitution mechanisms at play depend on the type of trend and on the stage of evolution. Li enrichment without M2+ enrichment in metasomatic white mica grains is observed, and it is postulated that Fe3+ in white mica explains this behavior. The K/Rb ratio decreases in white micas with fractionation, whereas the concentrations of incompatible elements, such as Cs, Rb, Tl, Ta, and Li, increase. At Wekusko Lake, the Nb and Ta contents seem to be controlled in part by the presence of columbite group minerals and in part by crystallization in boundary layers.
Innovationspotenziale im Komplexitätsmanagement/Potential for innovation in SME complexity management
Authors: Deuter Andreas , Tackenberg Sven , Herrmann Jan-Phillip , Vathauer Marc , Kage Franz
Published: February 2023

Mit der steigenden Komplexität der Entwicklung mechatronischer Produkte sind den beteiligten Akteuren die Wirkbeziehungen zwischen den Bauteilen sowie zwischen den Bauteilen und den erforderlichen Produktionsprozessen oft nicht mehr hinreichend bekannt. Nicht abgestimmte Entscheidungen und Handlungen sind die Folge, die zu Kosten- und Terminüberschreitungen führen. Dieser Beitrag zeigt mögliche Innovationspotenziale auf, die ein Assistenzsystem für das Komplexitätsmanagement bieten kann.

 

Due to the increasing complexity in developing mechatronic products, often the stakeholders involved are no more aware of the interrelationships between components as well as between the components and the required production processes. This results in non-coordinated decisions and actions, leading to cost and schedule overruns. This article shows how an assistance system for complexity management can offer potential for innovation.
Tackling Household Food Insecurity: The Experience of Vietnam
Authors:   Nong Lam University, Vietnam, Nhat Trang Thi Huy
Published: February 2023

This paper is a systematic review of the facts and figures related to the issues of food security in Vietnam. Based on a comprehensive definition of food security as "access by all people at all times to enough, nutritionally adequate, and safe food for an active and health life" (Kennedy 2002), it describes and analyzes food security in connection with poverty or macro policies, in order to identify and understand thoroughly the problems related to food security. It shows that poor households are, per se, food-insecure, and that policies which target rapid economic growth using a socioeconomic approach help alleviate poverty and food insecurity. Its findings mainly confirm that household food security–specifically issues concerning food safety, availability, access, adequacy, and vulnerability – is still a vital concern in Vietnam.
Estimation of Technical Efficiency for Rice Farms in Central Thailand Using Stochastic Frontier Approach
Authors:   Department of Agribusiness and Information System, Faculty of Agriculture, Universiti Putra Malaysia, Taraka Kallika , Latif Ismail Abd ,   Universiti Putra Malaysia, Shamsudin Mad Nasir ,   Universiti Putra Malaysia, bin Ahmad Sidique Shaufique ,   Universiti Putra Malaysia
Published: February 2023

As one of Thailand's economic crops, rice plays an important role in generating national income and creating domestic employment for the country. Its production has been increasing because of the expansion of areas planted to rice and not due to increases in productivity. The national average yield is considerably low compared with that of other rice-producing countries. This study measured the technical efficiency of rice farmers in the central region of Thailand and identified the factors causing technical inefficiency using stochastic frontier analysis (SFA) approach specified as a translog production function. Cross-sectional data were randomly collected from 384 sampled farmers from nine provinces of central Thailand who generally operated their farms using pre-germinated broadcasting method in the major rice crop year 2009/2010. Results reveal that technical efficiency ranged from 49.69 to 97.17 percent, with a mean of 85.35 percent. Gender, farming experience, good agricultural practices (GAP), and cropping intensity were found to contribute positively toward farm technical efficiency. Farmers should be provided knowledge of GAP and should adopt GAP in their farms' activities. Agricultural extension officers should organize knowledge and experience exchange between successful farmers and other farmers, and promote the use of certified seeds to improve farm efficiency and farmers' income.
DIGITAL TECHNOLOGIES AND INNOVATION IN AIRPORT SERVICES: A BENEFIT MODEL APPROACH
Authors: Poulaki Ioulia , Paraschi Elen Paraskevi , Marinakos Konstantinos , Avramopoulos Avraam , Makrygianni Sevasti
Published: February 2023

Significant changes have taken place at airports due to market liberalization, airport privatization and growing competition. The growing demand and evolving expectations of passengers, require new ways of using technologies, to enhance operational processes and the whole travel experience. The digital era is transforming the aviation industry and has a significant impact on its future. The aim of this study is to assess the benefits of applying digital technologies to airports and airlines and their inseparable connection with innovative services provision to passengers, while it describes how to create a seamless end to end experience at the airport, maintaining a high level of security. Moreover, the study underlines the contribution of digital technologies to aviation industry, focusing on the organizational integration and passenger experience optimization. Reference is made to the pandemic, of COVID-19 and its impact on air travel. Primary research methodology is qualitative, with structured personal interviews, while the main findings indicated that through digital technologies and innovative services, the benefits for airports, airlines and passengers are increasing. Finally, this paper discusses a benefit model approach, based on the literature review and the research findings, that may have theoretical and practical implications.
TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star
Authors: Heitzmann Alexis , Zhou George , Quinn Samuel N. , Huang Chelsea X. , Dong Jiayin , Bouma L. G. , Dawson Rebekah I. , Marsden Stephen C. , Wright Duncan , Petit Pascal , Collins Karen A. , Barkaoui Khalid , Wittenmyer Robert A. , Gillen Edward , Brahm Rafael , Hobson Melissa , Hellier Coel , Ziegler Carl , Briceño César , Law Nicholas , Mann Andrew W. , Howell Steve B. , Gnilka Crystal L. , Littlefield Colin , Latham David W. , Lissauer Jack J. , Newton Elisabeth R. , Krolikowski Daniel M. , Kerr Ronan , Rampalli Rayna , Douglas Stephanie T. , Eisner Nora L. , Guedj Nathalie , Sun Guoyou , Smit Martin , Huten Marc , Eschweiler Thorsten , Abe Lyu , Guillot Tristan , Ricker George , Vanderspek Roland , Seager Sara , Jenkins Jon M. , Ting Eric B. , Winn Joshua N. , Ciardi David R. , Vanderburg Andrew M. , Burke Christopher J. , Rodriguez David R. , Daylan Tansu
Published: February 2023

We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (<700 Myr). This planet stands out because of its unusually long orbital period for transiting planets with known masses (P
orb = 225.11781

−
0.00022

+
0.00025

days) and because it has a substantial eccentricity (e = 0.76

−
0.02

+
0.02

). The location of TOI-4562 near the southern continuous viewing zone of TESS allowed observations throughout 25 sectors, enabling an unambiguous period measurement from TESS alone. Alongside the four available TESS transits, we performed follow-up photometry using the South African Astronomical Observatory node of the Las Cumbres Observatory and spectroscopy with the CHIRON spectrograph on the 1.5 m SMARTS telescope. We measure a radius of

1.118

+
0.013

−
0.014

R
J and a mass of 2.30

−
0.47

+
0.48

M
J for TOI-4562b. The radius of the planet is consistent with contraction models describing the early evolution of the size of giant planets. We detect tentative transit timing variations at the ∼20 minutes level from five transit events, favoring the presence of a companion that could explain the dynamical history of this system if confirmed by future follow-up observations. With its current orbital configuration, tidal timescales are too long for TOI-4562b to become a hot Jupiter via high-eccentricity migration though it is not excluded that interactions with the possible companion could modify TOI-4562b’s eccentricity and trigger circularization. The characterization of more such young systems is essential to set constraints on models describing giant-planet evolution.
GALFIT-ing AGN Host Galaxies in COSMOS: HST versus Subaru
Authors: Dewsnap Callum , Barmby Pauline , Gallagher Sarah C. , Urry C. Megan , Ghosh Aritra , Powell Meredith C.
Published: February 2023

The COSMOS field has been extensively observed by most major telescopes, including Chandra, HST, and Subaru. HST imaging boasts very high spatial resolution and is used extensively in morphological studies of distant galaxies. Subaru provides lower spatial resolution imaging than HST but a substantially wider field of view with greater sensitivity. Both telescopes provide near-infrared imaging of COSMOS. Successful morphological fitting of Subaru data would allow us to measure morphologies of over 104 known active galactic nucleus (AGN) hosts, accessible through Subaru wide-field surveys, currently not covered by HST. The morphological parameters indicate the types of galaxies that host AGNs. For 4016 AGNs between 0.03 < z < 6.5, we study the morphology of their galaxy hosts using GALFIT, fitting components representing the AGN and host galaxy simultaneously using the i-band imaging from both HST and Subaru. Comparing the fits for the differing telescope spatial resolutions and image signal-to-noise ratios, we identify parameter regimes for which there is strong disagreement between distributions of fitted parameters for HST and Subaru. In particular, the Sérsic index values strongly disagree between the two sets of data, including sources at lower redshifts. In contrast, the measured magnitude and radius parameters show reasonable agreement. Additionally, large variations in the Sérsic index have little effect on the

χ

ν

2

of each fit, whereas variations in other parameters have a more significant effect. These results indicate that the Sérsic index distributions of high-redshift galaxies that host AGNs imaged at ground-based spatial resolution are not reliable indicators of galaxy type and should be interpreted with caution.
The ESO-VLT MIKiS Survey Reloaded: Exploring the Internal Kinematics of NGC 6440*
Authors: Leanza Silvia , Pallanca Cristina , Ferraro Francesco R. , Lanzoni Barbara , Dalessandro Emanuele , Cadelano Mario , Vesperini Enrico , Origlia Livia , Mucciarelli Alessio , Valenti Elena
Published: February 2023

In the context of the ESO-VLT Multi-Instrument Kinematic Survey of Galactic globular clusters, here we present the line-of-sight velocity dispersion profile of NGC 6440, a massive globular cluster located in the Galactic bulge. By combining the data acquired with four different spectrographs, we obtained the radial velocity of a sample of ∼1800 individual stars distributed over the entire cluster extension, from ∼0.″1 to 778″ from the center. Using a properly selected sample of member stars with the most reliable radial velocity measures, we derived the velocity dispersion profile up to 250″ from the center. The profile is well described by the same King model that best fits the projected star density distribution, with a constant inner plateau (at σ
0 ∼ 12 km s−1) and no evidence of a central cusp or other significant deviations. Our data allowed us to study the presence of rotation only in the innermost regions of the cluster (r < 5″), revealing a well-defined pattern of ordered rotation with a position angle of the rotation axis of ∼132° ± 2° and an amplitude of ∼3 km s−1 (corresponding to V
rot/σ
0 ∼ 0.3). In addition, a flattening of the system qualitatively consistent with the rotation signal has been detected in the central region.
Delayed Development of Cool Plasmas in X-Ray Flares from the Young Sun-like Star κ
1 Ceti
Authors: Hamaguchi Kenji , Reep Jeffrey W. , Airapetian Vladimir , Toriumi Shin , Gendreau Keith C. , Arzoumanian Zaven
Published: February 2023

The Neutron star Interior Composition Explorer (NICER) X-ray observatory observed two powerful X-ray flares equivalent to superflares from the nearby young solar-like star κ
1 Ceti in 2019. NICER follows each flare from the onset through the early decay, collecting over 30 counts s−1 near the peak, enabling a detailed spectral variation study of the flare rise. The flare in September varies quickly in ∼800 s, while the flare in December has a few times longer timescale. In both flares, the hard-band (2–4 keV) light curves show typical stellar X-ray flare variations with a rapid rise and slow decay, while the soft X-ray light curves, especially of the September flare, have prolonged flat peaks. The time-resolved spectra require two temperature plasma components at kT ∼0.3–1 and ∼2–4 keV. Both components vary similarly, but the cool component lags by ∼200 s with a four to six times smaller emission measure (EM) compared to the hot component. A comparison with hydrodynamic flare loop simulations indicates that the cool component originates from X-ray plasma near the magnetic loop footpoints that mainly cools via thermal conduction. The time lag represents the travel time of the evaporated gas through the entire flare loop. The cool component has a several times smaller EM than its simulated counterpart, suggesting a suppression of conductive cooling, possibly by the expansion of the loop cross-sectional area or turbulent fluctuations. The cool component’s time lag and EM ratio provide important constraints on the flare loop geometry.
NICER/NuSTAR Characterization of 4U 1957+11: A Near Maximally Spinning Black Hole Potentially in the Mass Gap
Authors: Barillier Erin , Grinberg Victoria , Horn David , Nowak Michael A. , Remillard Ronald A. , Steiner James F. , Walton Dominic J. , Wilms Jörn
Published: February 2023

4U 1957+11 is a black hole candidate system that has been in a soft X-ray spectral state since its discovery. We present analyses of recent joint NICER and NuSTAR spectra, which are extremely well described by a highly inclined disk accreting into a near maximally spinning black hole. Owing to the broad X-ray coverage of NuSTAR, the fitted spin and inclination are strongly constrained for our hypothesized disk models. The faintest spectra are observed out to 20 keV, even though their hard tail components are almost absent when described with a simple corona. The hard tail increases with luminosity, but shows clear two-track behavior with one track having appreciably stronger tails. The disk spectrum color-correction factor is anticorrelated with the strength of the hard tail (e.g., as measured by the Compton y parameter). Although the spin and inclination parameters are strongly constrained for our chosen model, the mass and distance are degenerate parameters. We use our spectral fits, along with a theoretical prior on color-correction, an observational prior on likely fractional Eddington luminosity, and an observational prior on distance obtained from Gaia studies, to present mass and distance contours for this system. The most likely parameters, given our presumed disk model, suggest a 4.6 M
⊙ black hole at 7.8 kpc observed at luminosities ranging from ≈1.7% to 9% of Eddington. This would place 4U 1957+11 as one of the few actively accreting sources within the mass gap of ≈2–5 M
⊙ where there are few known massive neutron stars or low-mass black holes. Higher mass and distance, however, remain viable.
The Chromosphere Underneath a Coronal Bright Point
Authors: Bose Souvik , Nóbrega-Siverio Daniel , De Pontieu Bart , van der Voort Luc Rouppe
Published: February 2023

Coronal bright points (CBPs) are sets of small-scale coronal loops, connecting opposite magnetic polarities, primarily characterized by their enhanced extreme-ultraviolet (EUV) and X-ray emission. Being ubiquitous, they are thought to play an important role in heating the solar corona. We aim at characterizing the barely explored chromosphere underneath CBPs, focusing on the related spicular activity and on the effects of small-scale magnetic flux emergence on CBPs. We used high-resolution observations of a CBP in Hβ and Fe i 617.3 nm from the Swedish 1 m Solar Telescope in coordination with the Solar Dynamics Observatory. This work presents the first high-resolution observation of spicules imaged in Hβ. The spicules were automatically detected using advanced image processing techniques, which were applied to the Dopplergrams derived from Hβ. Here we report their abundant occurrence close to the CBP “footpoints” and find that the orientation of such spicules is aligned along the EUV loops, indicating that they constitute a fundamental part of the whole CBP magnetic structure. Spatiotemporal analysis across multiple channels indicates that there are coronal propagating disturbances associated with the studied spicules, producing transient EUV intensity variations of the individual CBP loops. Two small-scale flux emergence episodes appearing below the CBP were analyzed, one of them leading to quiet-Sun Ellerman bombs and enhancing the nearby spicular activity. This paper presents unique evidence of the tight coupling between the lower and upper atmosphere of a CBP, thus helping to unravel the dynamic phenomena underneath CBPs and their impact on the latter.
An Upper Limit on the Charge of the Black Hole Sgr A* from EHT Observations
Authors: Ghosh Sushant G. , Afrin Misba
Published: February 2023

The Event Horizon Telescope (EHT) recently released an image of the supermassive black hole Sgr A* showing an angular shadow diameter d
sh = 48.7 ± 7 μas and Schwarzschild shadow deviation

δ
=
−

0.08

−
0.09

+
0.09

(
VLTI
)

,

−

0.04

−
0.10

+
0.09

(
Keck
)

using a black hole mass

M
=

4.0

−
0.6

+
1.1

×

10

6

M

⊙

. The EHT image of Sgr A* is consistent with a Kerr black hole’s expected appearance, and the results directly prove the existence of a supermassive black hole at the center of the Milky Way. Here, we use the EHT observational results for Sgr A* to investigate the constraints on its charge with the aid of Kerr-like black holes, paying attention to three leading rotating models, namely Kerr–Newman, Horndeski, and hairy black holes. Modeling the supermassive black hole Sgr A* as these Kerr-like black holes, we observe that the EHT results for Sgr A* place stricter upper limits on the parameter space of Kerr–Newman and Horndeski black holes than those placed by the EHT results for M87*. A systematic bias analysis reveals that observational results from future EHT experiments will place more precise limits on the charge of the black hole Sgr A*. Thus, the Kerr-like black holes and Kerr black holes are indiscernible in a substantial region of the EHT-constrained parameter space; the claim is substantiated by our bias analysis.
Quantification of the Writhe Number of the Evolution of Solar Filament Axes
Authors: Zhou 周 Zhenjun 振军 , Jiang Chaowei , Song Hongqiang , Wang Yuming , Hao Yongqiang , Cui Jun
Published: February 2023

Solar filament eruptions often show complex and dramatic geometric deformation that is highly relevant to the underlying physical mechanism triggering the eruptions. It is well known that the writhe of filament axes is a key parameter characterizing its global geometric deformation, but a quantitative investigation of the development of writhe during its eruption is still lacking. Here we introduce the Writhe Application Toolkit, which can be used to characterize accurately the topology of filament axes. This characterization is achieved based on the reconstruction and writhe number computation of three-dimensional paths of the filament axes from dual-perspective observations. We apply this toolkit to four dextral filaments located in the northern hemisphere with a counterclockwise (CCW) rotation during their eruptions. Initially, all these filaments possess a small writhe number (≤0.20) indicating a weak helical deformation of the axes. As the CCW rotation kicks in, their writhe numbers begin to decrease and reach large negative values. Combined with the extended Călugăreanu theorem, the absolute value of twist is deduced to decrease during the rotation. Such a quantitative analysis strongly indicates a consequence of the conversion of twist into writhe for the studied events.
A new species of Paracortina from a Vietnamese cave, with remarkable secondary sexual characters in males (Callipodida, Paracortinidae)
Authors: Nguyen Anh D. , Stoev Pavel , Nguyen Lien T. P. , Vu Tam T.
Published: February 2023

A new millipede species, Paracortina kyrangsp. nov., is described from a cave in Cao Bang Province, northern Vietnam. The new species is diagnosed by having an extraordinarily long projection on the head of males, reduced eyes, a gonocoxite with two processes, a long and slender gonotelopodite with two long, clavate prefemoroidal processes densely covered with long macrosetae apically, and with a distal, reverse, short spine on mesal side, and a rather sinuous distal part of the telopodite. This is the third species of the genus that is known from Vietnam. A brief comparison of some secondary sexual characters is made.
L’articulation du récit idéologique et de l’éditorial dans l’introduction de La Cité libre de Walter Lippmann
Authors: Guilbert Thierry
Published: February 2023

Cette approche inédite de Walter Lippmann prend en compte l’essayiste et l’éditorialiste dans leur matérialité discursive. Elle conçoit l’introduction de La Cité libre comme un discours en relation interdiscursive avec ses pairs et les préoccupations politiques de son époque, mais aussi et surtout comme un discours efficient qui mêle les procédés discursifs et persuasifs de l’éditorial avec le « récit idéologique » (Faye 2003). L’examen de ces traits montre comment se constitue la « narration primitive » ( ibid. ), préalable nécessaire à l’acceptabilité du « nouveau libéralisme ».
Des « modèles de développement » aux « mondes du développement » : une enquête statistique
Authors: Combarnous François , Piveteau Alain , Rougier Éric
Published: February 2023

Cet article confronte les modèles prescriptifs du développement, tels que tirés de l’analyse génétique de huit décennies de conseils ou d’injonctions légitimées par la théorie économique dominante à chaque période, aux « mondes du développement » observés à la fin des années 2010. En projetant les pays en développement dans la galaxie de ces différents modèles, nous montrons que si plusieurs mondes sont parvenus à atteindre certaines cibles (soutenabilité sociale ou institution du marché), aucun monde n’est aujourd’hui réellement équipé pour s’orienter dans le monde commun que dessine le nouveau régime climatique et la question environnementale. Classification JEL : O12 ; 019 ; 029
Des produits de base aux ressources : l’évolution de la place des matières premières dans les analyses et stratégies de développement
Authors: Géronimi Vincent , Mainguy Claire
Published: February 2023

À partir des articles de la revue Mondes en développement , nous proposons une lecture, de l’évolution de la place des matières premières dans les analyses et stratégies du développement en fonction de trois principales dynamiques enchevêtrées : celle de l’évolution générale de la pensée du développement, selon la chronologie présentée par Hugon (2007) ; celle de l’évolution des marchés des matières premières, avec leurs chocs et leurs ruptures ; celle de la montée en puissance du développement durable. Se dessinent ainsi les contours d’une économie politique du développement, prenant en compte l’incertitude et les institutions, les stratégies des acteurs et les effets d’échelles. Classification JEL : O190, Q020, O130
Le peuple de Dieu, avis de recherche ou réalité à honorer ?
Authors: Pelletier Anne-Marie
Published: February 2023

Il existe bien, dans le concret de la vie de l’Église, un « peuple de Dieu » actif et engagé, évoqué ici même par Dominique Greiner. En revanche, notre ecclésiologie, malgré Vatican II, continue à placer ce peuple de Dieu en retrait du sacerdoce ministériel. Il faut donc remonter la pente de la sacerdotalisation de l’Église institutionnelle, retrouver la théologie paulinienne de l’Église corps du Christ , où tous sont engendrés de la grâce baptismale pour constituer une Église communion . C’est dans ce cadre qu’il faut repenser aujourd’hui une théologie des ministères non cléricale et un sain exercice de l’autorité, qui honore en particulier la fraternité, ce bien essentiel mis en valeur par la première Église.