bluuebunny/crossref_metadata_2025_split huggingface dataset:
Lung Function Changes with Acute +Gz Exposure as Assessed by Impulse Oscillometry
Authors: Cornelissen Simon J. W. M. , Frijters Erik , Gray Gary 
Published: January 2025

INTRODUCTION: The introduction of fifth-generation fighter aircraft has raised concerns regarding the impact of high gravitational forces on lung function. This study aimed to investigate the acute effects of controlled +Gz exposure, up to +9 Gz, on lung function in military pilots using impulse oscillometry (IOS).
METHODS: These studies, conducted in Canada and the Netherlands, involved military pilots undergoing high G centrifuge training. IOS measurements were obtained using the TremofloTM IOS device, which assesses lung function during normal tidal breathing without forced maneuvers. Included in the study were 30 military pilots of the Royal Canadian Air Force (RCAF) and 28 military pilots trained by the Royal Netherlands Air Force (RNLAF). Both performed baseline IOS measurements, with postexposure measurements obtained within 10 min in RCAF pilots and within 2 min by the RNLAF.
RESULTS: Both the RCAF and RNLAF studies showed significant increases in compliance (median = −1.605 and −2.085) and decreases in resistance (median = −0.611 and −0.230). Small airway resistance reduction was significant only in the RNLAF study (median = 0.176), indicating a greater effect at higher Gz levels.
DISCUSSION: The combined data showed no evidence that repeated exposure to high +Gz in combination with an anti-G suit and performance of the anti-G straining maneuver has acute negative effects on lung function. In fact, there was evidence of improvement in small airway function, perhaps as a result of the respiratory strain component of the anti-G straining maneuver, which increases intrathoracic pressure, possibly stretching the small airways, decreasing resistance, and increasing reactance.
Cornelissen SJWM, Frijters E, Gray G. Lung function changes with acute +Gz exposure as assessed by impulse oscillometry. Aerosp Med Hum Perform. 2025; 96(1):62–66.
Association of Total Flight Hours and Health Conditions with Sick Leave Use Among Civilian Pilots
Authors: Han Bok-Soon , Choi Eun-Hi , Kim Min-Seong 
Published: January 2025

INTRODUCTION: In-flight medical incapacitation jeopardizes flight safety. To reduce such breakdown episodes, airlines have implemented a sick leave system. This study aimed to examine the association of total flight hours and health status with sick leave use among civilian pilots in South Korea and to identify the demand for a health promotion program.
METHODS: For data collection, an online survey was conducted between August–November 2018, involving pilots of nine civil airlines in South Korea. A total of 456 pilots responded, of which data from 6 were excluded due to missing items; 450 pilots were included in the final analysis. The SPSS WIN 26.0 software was used for analysis, and a logistic regression analysis was performed.
RESULTS: The factors influencing sick leave were 7.39 times higher in the case of 1000–4999 h of total flight time than in the case of less than 1000 h, and 2.19 times higher for those with pre-existing conditions than for those without.
DISCUSSION: Future research is needed to focus on the relationship between sick leave use and chronic diseases and between sick leave use and health-promoting behaviors among pilots. In addition, health promotion programs may be more effective if they are tailored to the job characteristics of pilots. Furthermore, counseling and education programs regarding the numerous harms of high-risk drinking must be strengthened. This may include emphasizing the negative effects of drinking on flight safety and personal health.
Han B-S, Choi E-H, Kim M-S. Association of total flight hours and health conditions with sick leave use among civilian pilots. Aerosp Med Hum Perform. 2025; 96(1):31–38.
Sudden Cardiac Arrest Associated with Hemodialysis
Authors: Tri Tai Truyen Thien Tan , Uy-Evanado Audrey , Holmstrom Lauri , Reinier Kyndaron , Chugh Harpriya , Jui Jonathan , Herzog Charles A. , Chugh Sumeet S. 
Published: January 2025

Background:
Individuals with end-stage renal disease may be at increased risk of sudden cardiac arrest (SCA) associated with dialysis therapy. However, community-based studies with comprehensive adjudication of SCA are lacking.

Methods:
We conducted a community-based study using a case-case study design in a US population of ≈1 million. All SCA cases with chronic kidney disease (CKD) were ascertained prospectively (2002-2020). We reviewed EMS narratives and archived medical records from regional hospitals to capture patients dialysis history, schedules, and the timing of SCA events in relation to dialysis sessions. Among those on regular hemodialysis, individuals who suffered SCA during hemodialysis or within an hour after completing hemodialysis (Intradialytic/immediate post-HD [IIHD]) were compared to cases with SCA at other times (non-IIHD). Non-compliant individuals or those intolerant of dialysis were excluded.

Results:
Out of 1,023 SCA cases with CKD, 195 (19.1%) were undergoing regular scheduled hemodialysis. Among these cases, 24.1% were IIHD SCA, while 75.9% occurred non-IIHD. The incidence of SCA during dialysis was 2.9 times higher than expected by chance. SCA events were more likely to occur on dialysis days (65.3% of events) vs. 34.7% events on the 4 off dialysis days (p<0.001). IIHD SCA had higher serum sodium (138.9±4.8 vs. 135.5±5.5 mmol/L, p=0.005), lower serum potassium (3.6±0.7 vs. 5.6±1.6 mmol/L, p<0.001), and higher bicarbonate levels (25.9±6.6 vs. 20.2±5.5 mmol/L, p<0.001) compared to their non-IIHD SCA counterparts. Regarding resuscitation details, IIHD SCA had a higher percentage of shockable rhythm (46.5 vs. 32.4%, p=0.09), witnessed collapse (85.1 vs. 53.4%, p<0.001), bystander CPR (72.3 vs. 37.9%, p<0.001), return of spontaneous circulation (66.0 vs. 42.5%, p=0.005), and survival to hospital discharge (30.4 vs. 5.4%, p<0.001) compared to non-IIHD SCA.

Conclusions:
In patients undergoing dialysis, SCA events were significantly more common on dialysis days, and 3-fold higher than expected by chance. We identified potential risk factors and survival outcome differences between IIHD vs. non-IIHD SCA groups that warrant future investigation.
Продуктивность сосновых молодняков искусственного происхождения в таежной зоне
Authors: Коновалова И.С. , Коновалов Д.Ю. , Клевцов Д.Н. 
Published: January 2025

Цель исследования заключалась в оценке роста и продуктивности сосняков искусственного происхождения в условиях дренированных и временно переувлажненных почв с учетом почвенной обработки и методов создания древостоя. Объектами служили лесные культуры сосны обыкновенной (Pinus sylvestris L.), созданные в 2000–2001 гг. посевом и посадкой традиционных саженцев, сеянцев, а также посадочного материала с закрытыми корнями в Каргопольском лесничестве Двинско-Вычегодского таежного лесного района. Установлены лесоводственно-таксационные параметры искусственных насаждений с использованием общепринятых в лесоводстве методик исследования древостоя. Выявлены особенности адаптационной устойчивости, роста и продуктивности культур на начальных этапах произрастания в зависимости от условий культивирования и гидрологического режима почв. Отмечено, что средние значения таксационных показателей, характеризующие рост и продуктивность насаждений, находятся в тесной взаимосвязи с типом лесорастительных условий. Определены высокие показатели роста культур сосны, созданных посадочным материалом с закрытой корневой системой, в условиях дренированных и временно переувлажненных почв. В результате исследований пришли к выводу, что к началу третьего десятилетия роста культур при должной обработке почвы и выборе оптимального посадочного материала сформировались высокопродуктивные искусственные сосняки, не ступающие по своим характеристикам естественным древостоям.
The purpose of the study was to evaluate the growth and productivity of pine forest crops of artificial origin under the drained and temporarily waterlogged soils, with soil treatments and stand planting methods. The objects of the study were forest crops of Pinus sylvestris L., set up in 2000-2001 by sowing and planting traditional seedlings, saplings, as well as with planting material with closed roots in the Kargopol forestry of the Dvinsk-Vychegodsky taiga forest region. The forestry and taxation parameters of forest crops were defined with the methods of stand research generally accepted in forestry. Peculiarities of adaptability, growth and productivity of crops at the first stages of growth depending on the conditions of cultivation and the hydrological regime of soils were found out. It was pointed that the average values of taxation indicators characterizing the growth and productivity of plantations were closely connected to the type of forest conditions. High growth rates of pine crops got by planting material with a closed root system were determined under drained and temporarily waterlogged soils. As a result of the research, it was concluded that by the beginning of the third decade of crop growth, with proper tillage and the optimal planting material choice, highly productive pine crops were formed, that were not inferior in their characteristics to the natural stands.
Влияние добавок из целебных трав китайской медицины на характеристики роста поросят-отъемышей раннего периода
Authors: Чжан И. 
Published: January 2025

Цель исследования – изучить влияние многокомпонентной добавки из целебных трав китайской медицины на поросят-отъемышей. Данный эксперимент использует однофакторный полностью рандомизированный план. Для эксперимента было отобрано 126 голов поросят, полученных от скрещивания 2 пород – породы Чанбай-Корейского автономного уезда и породы йоркшир. Поросят отняли на 28-й день жизни, их вес составлял 7,27±0,18 кг, в случайном порядке их разделили на 7 групп, каждая группа была поделена на 3 подгруппы, в каждой подгруппе было по 6 голов. Многокомпонентный препарат из целебных трав китайской медицины в дневном рационе был представлен в двух видах – отваре и порошке. Первая группа является контрольной группой, 2, 3 и 4 группы – это группы, где в качестве добавки использовался отвар, дозы которого были 0,05; 0,10; 0,15%, а 5, 6 и 7 группы – это группы, где в качестве добавки использовали порошок, дозы которого составили 0,05; 0,10; 0,15%. Период эксперимента составил 21 день, после того как поросят отняли от матерей, на 7, 14 и 21 день проводилась проверка их продуктивности. Результаты показали, что многокомпонентный препарат из целебных трав китайской медицины смог значительно повысить ежедневный прирост и объем потребления пищи поросят-отъемышей (P<0,05), а также, что разница влияния данного препарата на затраты корма на единицу прироста поросят-отъемышей значительна (P<0,05).
The purpose of the research is to study the effect of a multicomponent supplement from medicinal herbs of Chinese medicine on weaning piglets. The experiment used a one-factor completely randomized plan. For the experiment, 126 piglets were selected, obtained from crossing of 2 breeds – the Changbai breed of the Korean Autonomous County and the Yorkshire breed. The piglets were weaned on the 28th day of life, their weight was 7.27± 0.18 kg, the piglets were randomly divided into 7 groups, each group was divided into 3 subgroups, each subgroup had 6 heads. The multicomponent additive from medicinal herbs of Chinese medicine in the daily diet was presented in two types: a decoction and a powder. The first group was a control group, groups 2, 3 and 4 were the groups where a decoction was used as an additive, with the doses of 0.05%, 0.10%, 0.15%, and groups 5, 6 and 7 were the groups where a powder was used as an additive, the doses of which were 0.05%, 0.10%, 0.15%. The experimental period was 21 days, after the piglets were weaned from their mothers, their productivity was checked on 7th, 14th and 21st days. The results showed that a multicomponent preparation from medicinal herbs of Chinese medicine was able to increase significantly the daily weight gain and food intake of weaning piglets (P<0,05), also they indicated that the difference of the effect of this additive on the food costs per unit weight gain of weaned piglets is significant (P<0,05).
Determination of temperature difference across the thermoelements in an integrated micro thermoelectric device
Authors: Arayama Ryuichiro , Miura Takuya , Mahfuz Md Mehdee Hasan , Matsuki Takeo , Watanabe Takanobu 
Published: January 2025

Abstract
Silicon nanowires (Si-NWs) have attracted significant attention for use in micro-thermoelectric generators (μ-TEGs) due to their lower thermal conductivity. In integrated TEGs, temperatures at the top and bottom surfaces of the device are measurable, however, the temperature at both ends of the Si-NW, which is responsible for power generation, remains unknown. In this study, the Seebeck coefficient of the Si-NW was precisely measured using a parameter measurement device where only a Si-NW is suspended over a cavity in the silicon substrate to identify the temperature difference (ΔT) across the Si-NW in an actual integrated TEG. It was found that the temperature difference at the ends of the Si-NW of the integrated TEG is only 6.8–8.5% of the total applied ΔT of the device, which suggests the potential for improving power generation efficiency through increasing ΔT across the Si-NWs by optimizing the device structure.
Plasmonically-enhanced reconfigurable photodetector based on graphene/Sb2S3 heterojunction
Authors: Lian Xiaojuan , Li Shiyu , Jiang Jiyuan , Huang Wen , He Nan , Liu Xiaoyan , Wu Jie , Wang Zhou , Zhu Gangyi , Wang Lei 
Published: January 2025

Abstract
Graphene photodetectors face challenges like weak absorption and narrow spectral range. To overcome these weakness, we proposed a novel photodetector based on a Gold (Au)/Graphene/Chalcogenide (Sb2S3) hetero-junction, leveraging surface plasmonic and phase-transition effects. Simulations show that optimizing Au and Sb2S3 nanoantenna thicknesses and diameters can achieve an absorption efficiency of 0.9 for both amorphous and crystalline states, with an adjustable wavelength range of 200 nm. The device demonstrates superior performance, including a responsivity of 125 A W−1, quantum efficiency of 1.36 × 104%, and detectivity of 2.25 × 109 Jones, offering a pathway to next-generation optoelectronic chips.
Embryonic histological changes in rats exposed to different doses of cyclophosphoamide
Authors: M Khalfa Hydar , L Al-msaid Haider , Muhsin Hawara 
Published: January 2025

Cyclophosphamide is a common anticancer drug that belongs to the nitrogen mustard group of alkylating agents, their acts by adding an alkyl group to DNA. Due to this cytotoxic property it is used extensively in a variety of carcinomas singly or in combination with other drugs to treat a variety of cancers. Therefore, the present study was conducted to compare and correlate histomorphological alterations in different anatomical sites of embryonic wistar albino rats induced by a gradual increase in cyclophosphoamide dose administered intraperitoneally through maternal delivery. Laboratory wistar albino rats were injected with different bolus doses of cyclophosphoamide intraperitoneally and rat pups were dissected after delivery . Liver and skin tissues were examined histologically and compared to control animals. Results: histological examination of all tissues in both groups shows gradual cytotoxic effect of cyclophosphoamide reaching extreme histological damage with increased bolus dose. Tissue damage included hemorrhaging and lymphocytic collection. There is a significant epidermal thickness between the control group and the groups treated with different cyclophosphoamide concentrations
Impact of Water Quality on Density of Birds in Bahr Najaf Depression, Iraq.
Authors: Alzurfi Sadiqk. , Abd Aljalil Ameen 
Published: January 2025

The study aimed to evaluate the impact of water quality standards on bird density in the Bahr al-Najaf depression for the period from October 2023 to April 2024 over a period of seven months. Three sites were chosen for the study: Some physical and chemical factors in the water were measured, such as (water temperature, air temperature, electrical conductivity, total dissolved solids, salinity, pH, dissolved oxygen, biological oxygen demand, , total hardness, calcium, magnesium hardness, and chloride,).The density of birds and number of species were determined in the study area. The air temperature ranged between (20.6 - 31)°C, the water temperature ranged (20 - 28)°C, the electrical conductivity ranged between (19.8 - 168.25) ms/cm, and the total dissolved solids ranged from (11,200 - 83,750) mg. /l, salinity between (13.85 - 117.777) ppt, pH between (7.9 - 8.2), dissolved oxygen between (0.73 - 5.6) mg/l, and biological oxygen demand between (0). 73 - 3 5 .5) mg/L, total hardness between (2200 - 21066.66) mg/L, and calcium hardness between (961.9 - 4382.08) mg. /L, magnesium between (216.4 - 4625.7) mg/L, chloride between (1799 - 17061) mg/L A total of 29 families with 82 species were discovered. Bird species diversity was greatest in the family Scolopacidae. (14 species), followed by Laridae (10 species), followed by Charadriidae, Columbidae, and Ardeidae each (five species), Motacillidae and Anatidae (4 species), and Corvidae, and Passeridae (three species) each. The three locations had different species diversity and abundance. The density of birds in the third site had a higher species abundance and diversity compared to other sites at all months except.TDS, salinity, and electrical conductivity showed a significant positive correlation with bird density, whereas a significant negative correlation was found between Mg ions and bird density. While showed a significant positive correlation with number species and pH, whereas a significant negative correlation was found between number species and chloride
PENGEMBANGAN POTENSI IBU RUMAH TANGGA UNTUK MENGHASILKAN PRODUK LILIN AROMATERAPI DARI LIMBAH MINYAK JELANTAH DI KELURAHAN JAYAMUKTI
Authors: Nurpribadi Giri , Rulianti Erina , Nurhidayanti Nisa , Nur'Aeni Nur'Aeni , Supriyati Supriyati 
Published: January 2025

Minyak goreng yang telah digunakan lebih dari tiga kali pada proses pemanasan dapat membahayakan bagi kesehatan manusia apabila digunakan lagi, namun jika dibuang secara langsung dapat mencemari lingkungan. Kegiatan pengabdian ini bertujuan untuk meningkatkan motivasi digunakan untuk membekali kemampuan warga Desa Jayamukti, khususnya ibu rumah tangga dalam mengolah limbah minyak jelantah menjadi produk lilin aromaterapi yang memiliki nilai jual tinggi. Kegiatan pengabdian ini meliputi lima tahapan yaitu perencanaan, koordinasi, sosialisasi, pendampingan pembuatan lilin aromaterapi dan evaluasi kegiatan. Tim pengabdian kepada masyarakat dari Universitas Pelita Bangsa bersama dengan peserta Pengabdian kepada Masyarakat desa setempat telah melakukan pengolahan minyak jelantah menjadi lilin aromaterapi sebagai produk bernilai jual tinggi yang ramah lingkungan dan upaya pengendalian lingkungan dari pencemaran air akibat minyak jelantah. Hasil evaluasi kegiatan Pengabdian kepada Masyarakat diperoleh suatu masukan dari beberapa peserta Pengabdian kepada Masyarakat yaitu perlu dilakukan uji coba pembuatan lilin aromaterapi dalam skala yang lebih besar seperti pemanfaatan limbah minyak goreng bekas pada komunitas rukun tetangga ,juga rukun warga, sehingga dapat dijadikan kegiatan produktif bagi ibu rumah tangga yang ingin mengembangkan usaha dengan cara memproduksi lilin aromaterapi sesuai inovasi dan kreativitas untuk digunakan secara mandiri
Pengaruh Status Sosial Ekonomi, dan Bimbingan Belajar terhadap Prestasi Belajar Siswa
Authors: Firmansyah Ababil , Neviyani Neviyani , Prasetiyorini Pudhak 
Published: January 2025

Pencapaian studi terdorong dari beberapa konsep, diantaranya pengaruh internal dan eksternal. Penelitian disini memiliki tujuan yaitu mengetahui dorongan sosio ekonomi serta bimbel dalam pencapaian studi murid pada siswa kelas XI Ekonomi dan Bisnis. di SMK As-Salafi Balung. Penelitian ini memakai konsep ex-post facto. Variabel yang diteliti adalah pencapaian studi Ekonomi Bisnis, status sosial, serta keberadaan Bimbel. Populasi terdiri dari 34 murid yang terdaftar di kelas XI SMK As-Salafi Balung tahun ajaran 2023/2024. Metode penyatuan data memakai survei serta pengambilan gambar. Metodologi memakai analisis regresi berganda. Hasil penelitian menunjukkan tidak ada relasi yang relevan dalam kedudukan sosial ekonomi pada keberhasilan studi pada disiplin ilmu Ekonomi Bisnis, dibuktikan sesuai nilai p-value sebesar 0,063 melebihi ambang batas 0,05. Bimbingan belajar memiliki dampak menguntungkan yang signifikan terhadap pencapaian pembelajaran Ekonomi Bisnis, terbukti dengan nilai p 0,000 berada dalam ambang batas 0,05. Studi ini menemukan bahwa posisi sosio-ekonomi dan bimbingan belajar mempunyai dampak menguntungkan yang signifikan terhadap capaian studi Ekonomi Bisnis. Hal ini didukung pada p-value 0,000 lebih rendah dari signifikansi 0,05. Value R2 0,238 menyatakan bahwa 23,8% variasi prestasi belajar pada disiplin Kewirausahaan disebabkan oleh kedudukan sosial ekonomi serta Bimbel. Namun penelitian disini tidak menganalisis faktor tambahan yang menyumbang 76,2% penjelasan.
Pengembangan Lembar Kerja Peserta Didik Berbasis Problem Based Learning pada Mata Pelajaran Matematika di Sekolah Dasar
Authors: Nira Nira , Marta Redo Andi , Noviyanti Mery 
Published: January 2025

Penelitian ini dilatarbelakangi tuntutan yang tinggi untuk menguasai matematika seringkali tidak sejalan dengan hasil belajar yang dicapai oleh peserta didik. Banyak siswa mengalami kesulitan dalam mencapai hasil belajar yang memadai dalam matematika, yang pada gilirannya mempengaruhi perkembangan peserta didik. Salah satu penyebab rendahnya prestasi belajar dalam matematika adalah kurangnya minat peserta didik untuk memahami subjek tersebut. Selain itu kemahiran dalam mengatasi permasalahan matematika, khususnya terkait dengan topik volume kubus dan balok, masih rendah di kalangan beberapa siswa. Sejumlah peserta didik menghadapi kendala saat menghadapi soal-soal, yang mengakibatkan sebagian besar dari mereka tidak berhasil mencapai KKM yang telah ditentukan 75. Penelitian ini merupakan penelitian pengembangan dengan model pendekatan ADDIE. Teknik pengumpulan data menggunakan instrumen dalam bentuk wawancara, angket, dan tes untuk memperoleh validitas, praktikalitas, dan efektivitas dari LKPD berbasis problem based learning yang dikembangkan. Data yang terkumpul dianalisis dengan menggunakan rumus yang telah ditentukan. Hasil validasi ahli materi LKPD berbasis problem based learning adalah 1) Aspek kesesuaian materi dengan SK KD dengan rata-rata keseluruhan: 3.67 dengan kriteria valid, Aspek kualitas isi dengan rata-rata keseluruhan: 3.48 dengan kriteria valid. 2) Aspek kelayakan dengan rata-rata keseluruhan: 3.33 dengan kriteria valid. 3) Aspek kebahasaan dengan rata-rata keseluruhan: 3.42 dengan kriteria valid dan aspek 4) Keterlaksanaan dengan rata-rata keseluruhan: 3.52 dengan kriteria valid, sedangkan hasil validasi desain adalah 1) kualitas isi dengan rata-rata keseluruhan: 3.35 dengan kriteria validasi. 2) Aspek desain dengan rata-rata keseluruhan: 3.38 dengan kriteria valid. 3) Kebahasaan dengan rata-rata keseluruhan: 3.44 dengan kriteria valid. 4) Keterlaksanaan dengan rata-rata keseluruhan: 3.34 dengan kriteria valid. Hasil uji coba skala kecil dan skala luas, serta analisis angket yang diisi oleh siswa, dapat disimpulkan bahwa LKPD berbasis Problem-Based Learning (PBL) ini menarik dan efektif untuk digunakan sebagai referensi belajar siswa.