bluuebunny/crossref_metadata_2025 huggingface dataset:
Left Pancreatectomy with Preservation of the Spleen: A Case Report
Authors: Labbi Ismail , Anis Tarik , Abaghrous Achraf , Taleb Khalid Ait , Mouaqit Ouadii
Published: April 2024

Left pancreatectomies are, among pancreatic resections, the simplest and best-tolerated. Their main short and long term complications are pancreatic fistula and diabetes, respectively. If the indication for pancreatectomy is a presumably benign lesion, splenic conservation is the general rule to avoid post-splenectomy infectious complications. There are two alternative techniques; sparing of the splenic artery and vein (Kimua procedur), or splenic preservation with sacrifice of the splenic artery and vein (Warshaw procedure) [1]. We report the case of a 41-year-old patient, admitted to our department for the management of a cystic lesion located at the tail of the pancreas, the patient underwent a caudal pancreatectomy with preservation of the spleen by laparotomy.
Community Detection in Network: Algorithmic Approaches with Python Programming
Authors: Hung Tran Dang
Published: April 2024

Community detection is the identification of different communities or groups that exist within a network. This is useful in social network analysis (SNA) or what is great is performing whole network analysis (WNA), where humans interact with others as part of their various communities, but these approaches are not limited to the study of humans. These methods are to investigate any type of node that interacts closely with other nodes, whether those nodes are animals, hashtags, websites, or any other type of node in the network. In this work, we zoom in on communities that exist in a network. Community detection is a clear, concise, and appropriate name for what we are doing. Communities in the network would be worth exploring and understanding for further purposes. There are several methods and different approaches to detect community, but in this paper, I use two efficient methods to detect whole network which are named Louvain Method (LM) and Girvan-Newman Method (GNM). With LM, we can build a fast algorithm that is effective at community detection in massive networks and optimize the algorithm for better results. Using the GNM, a better approach that can identify the least number of edges that could be cut would result in a split network. We could do this by making an algorithm looking for the edges that the greatest number of shortest paths pass through.
ПРОДУКТВНІСТЬ СВИНЕЙ П’ЄТРЕН ЗАЛЕЖНО ВІД АЛЬТЕРГАТИВНИХ ВАРІАНТІВ ГЕНІВ ryr-1 ТА mc4r
Authors: Кірович Н. , Китаєва A. , Різничук I. , Панікар I. , Сусол Р.
Published: April 2024

У статті подано дослідження щодо поліморфізму генів ріанодінового рецептора (RYR-1) та локусу гена MC4R свиней породи п’єтрен французького походження та їх зв’язок саме з відтворювальними ознаками. Варто зауважити, що ген кандидат чутливості тварин до стресів (RYR-1) і ген кандидат типування свиней для селекції на зменшення товщини шпику та покращення м’ясних кондицій (МС4R) не відповідають за відтворювальну здатність свиней. В той же час врахування належності ремонтного молодняку свиней як носіїв того чи іншого генотипу за генами RYR-1 та МС4R при формуванні племінного стада свиней породи п’єтрен є необхідним та дієвим заходом, що підвищує кількість благоприємних опоросів опоросів (низький рівень аварійних опоросів, підвищена багатоплідність) у даній популяції, що, відповідно підвищує ключові репродуктивні ознаки на кшталт багатоплідності, кількості молодняку та середньої живої маси гнізда при відлученні у 28 днів. За такого спрямованого відбору варто надавати перевагу ремонтним свинкам, що є безпосередніми носіям гетерозиготного генотипу AGNn, GGNn за відповідними генами МС4R та RYR-1. При формуванні батьківських пар з метою отримання високого рівня продуктивності за відтворювальними ознаками (багатоплідність понад 8,00 голів) кнури-плідники можуть бути носіями гомозиготного генотипу GGnn за генами МС4R та RYR-1, що в свою чергу сприяти одержанню нащадків з підвищеним рівнем м’ясної продуктивності. Для підвищення відтворювальної здатності свиней породи п’єтрен необхідно проводити відбір ремонтних свинок з врахуванням поліморфізму за генами RYR-1 та МС4R.
ЕТАПИ СТАНОВЛЕННЯ КАФЕДР ВЕТФАКУ (ТЕРАПІЇ, ХІРУРГІЇ)
Authors: Атрахова Н.
Published: April 2024

Відтворення історії ветеринарного факультету Одеського державного аграрного університету на основі роботи з архівними документами. Формування ветеринарного факультету, виникнення кафедр «Хірургії» та «Терапії». Науково-педагогічний склад кафедр.
ЕФЕКТИВНІСТЬ ПАТОГЕНЕТИЧНОЇ ТЕРАПІЇ ПРИ СЕРОЗНОМУ МАСТИТІ У СВИНОМАТОК
Authors: Розум Є. , Морозов M. , Фісенко Д.
Published: April 2024

В науковій статті наведенні результати дослідження щодо ефективності патогенетичної терапії при лікуванні свиноматок хворих на серозний мастит. Встановлено високий терапевтичний ефект комплексної терапії при лікуванні свиноматок, хворих на серозний мастит має комплексний метод - коротка новокаїнова блокада із додаванням до нього 3 мл дексафорту триразово з інтервалом 48 год.
ДОСВІД СЕРТИФІКАЦІЇ БАГАТОПРОФІЛЬНОЇ ЛАБОРАТОРІЇ ВЕТЕРИНАРНОЇ МЕДИЦИНИ ОДАУ ВІДПОВІДНО ДО ВИМОГ ДСТУ ISO 10012:2005
Authors: Жунько I. , Зеленіна O.
Published: April 2024

Все частіше в Україні постає питання створення та роботи лабораторій ветеринарного профілю за міжнародними стандартами. Результати досліджень ветеринарних лабораторій є основою діагностики та лікування тварин. Це обумовлює певні вимоги щодо якості даних лабораторій та послуг їх.

У 2015 році за фінансової та науково-технічної підтримки Європейського союзу (ЄС) в Одеському державному аграрному університеті (ОДАУ) була заснована сучасна Багатопрофільна лабораторія ветеринарної медицини (БПЛВМ). Для повноцінної роботи лабораторії з часом постала необхідність сертифікації та отримання свідоцтва про відповідність системи вимірювань вимогам ДСТУ ISO 10012:2005.

В ході сертифікації та метрологічного забезпечення використовували затвердженні методики технічного характеру, що базуються на чинних стандартних методиках вимірювання або на інструкціях, розроблених замовниками чи виробниками засобів вимірювальної техніки, застосовували чинні методики атестації випробувального обладнання та контролю вихідних параметрів.

В процесі сертифікації Багатопрофільна лабораторія ветеринарної медицини активно співпрацювала з ДП «Одесастандартметрологія», ДП «УКРМЕТРТЕСТСТАНДАРТ». В результаті сертифікації БПЛВМ в грудні 2021 року отримано свідоцтво № 04-0055/2021 про відповідність системи вимірювань вимогам ДСТУ ISO 10012:2005, чинне протягом трьох років з дати реєстрації. В серпні 2023 року успішно проведено плановий моніторинг, встановлено, що система керування вимірюваннями БПЛВМ відповідає вимогам ДСТУ ISO 10012:2005. Дію свідоцтва продовжено.
HONEY CAN BE USED AS AN INDICATOR OF ENVIRONMENTAL POLLUTION - A REWIEV
Authors: Erhan Songül , Matur Erdal
Published: April 2024

Honey bees (Apis mellifera) collect nectar and pollen using an area of approximately 5 km in diameter. At the same time, they actually take biological samples from thousands of points of this land. Therefore, honey samples can be used as an important biomarker to detect environmental pollution. Because the content of honey also reflects the quality of the soil, water and air in the region where the bee lives. The determination of the following chemical substances in honey provides important data about environmental pollution. Pesticides and Chemicals: Pesticides and other chemicals used in agricultural areas may leave residues in plant nectars and soil. When bees produce honey using these nectars, traces of these chemicals may be present in the honey. Analysis of honey with pesticide residues can be helpful in demonstrating the level of environmental pollution. Heavy Metals: Heavy metals can accumulate in the environment because of air, water, and soil pollution. Bees can get these heavy metals through nectar and plants they collect. High heavy metal levels in honey can be an indicator of environmental pollution. Nectars collected by bees from flowers may contain such substances. In addition, changes in the smell and taste of honey can be used as an indicator of environmental pollution. Because environmental pollution can affect vegetation and soil, this can change the smell and taste of nectar collected by bees. Monitoring the odor and taste profile of honey can be an indicator of environmental changes. Particularly in regions where large-scale wars take place, chemical substances emitted by weapons, heavy metals, and toxic substances released due to environmental destruction are transmitted to soil and water. For this reason, the extent of environmental pollution can be determined by taking honey samples from various regions and analyzing them.
El diseño de un app para promover la lectura de cómics peruanos resaltando su valor cultural en lectores jóvenes que frecuentan el C.C. Arenales en el año 2019
Authors:   , Agreda Delgado Bill Ángel
Published: April 2024

El objetivo de este trabajo de investigación es determinar de qué manera una aplicación puede impulsar la lectura de cómics peruanos, resaltando su valor cultural en jóvenes limeños que asisten al C.C Arenales.
Análisis estratégico de las campañas de de violencia contra la mujer realizada por la Sub Unidad de Comunicación e Imagen del Ministerio de la Mujer y Poblaciones Vulnerables (MIMP) Perú, año 2018
Authors:   , Alvarado Perez Miriam Priscila
Published: April 2024

Esta investigación analiza estratégicamente el diseño, planificación, ejecución del plan comunicacional desarrollado por el Ministerio de la Mujer y Poblaciones Vulnerables (MIMP) del 2018, con el objetivo de determinar si existe una relación entre el lanzamiento de campañas, y el impacto que está teniendo a nivel social, debido al aumento registrado del 40.3% de casos de violencia en comparación del 2017.
Diseño basado en conceptos sensoriales de centro de salud infantil oncológico
Authors:   , Bravo Benavides Sandra
Published: April 2024

El trabajo analiza la infraestructura de los hospitales, su evolución, así como las carencias que aun persisten en el Perú, tanto a nivel público como privado. Aborda también la problemática en la atención hospitalaria a menores de edad. El trabajo se centra en una adecuada atención a los pacientes menores de edad, finalizando con la propuesta de un proyecto arquitectónico hospitalario.
El impacto que genera la aplicación del ecodiseño y su influencia en la mejora del desarrollo sostenible sostenible de la empresa Agua Ventura en Amazonas, 2020
Authors:   , Huamán Rodriguez Xiomi Anaís
Published: April 2024

Las oportunidades que brinda la inclusión del ecodiseño y el desarrollo sostenible como conceptos dentro de una empresa son amplios e inexplorados. Por lo general, y en la actualidad, se ve su implementación como un gasto ya que con una mal estructura manejada internamente por la empresa, esto puede ser contraproducente. Sin embargo, y apoyado de una buena gestión ambiental, estos conceptos se pueden transformar en la más grande y conveniente inversión ya que no solo ofrece beneficios tanto económicos como de oportunidades en el área de marketing de la empresa y supromoción de imagen de marca, sino que se convierte en una herramienta que permitirá el crecimiento de la empresa sin necesidad de sobre explotar o generar un gran impacto ambiental. Con estos fundamentos y basándose en la empresa Agua Ventura y su estructura de gestión interna, que involucra desde el abastecimiento de su materia prima hasta las oportunidades que le brinda a los pobladores de la zona, esta investigación permite observar diversos aspectos que facilitan un correcto manejo de esos concepto y a su vez reconoce debilidades de la empresa en cuestión que necesitan ser trabajadas para reforzar la visión que tiene esta empresa y la responsabilidad que ha aceptado tanto con el medio ambiento como con la sociedad que habita a sus alrededores.
A 2-Stable Family of Triple Systems
Authors: Zhang Yixiao , Hou Jianfeng , Li Heng
Published: April 2024

For many well-known families of triple systems $\mathcal{M}$, there are perhaps many near-extremal $\mathcal{M}$-free configurations that are far from each other in edit-distance. Such a property is called non-stable and is a fundamental barrier to determining the Turán number of $\mathcal{M}$. Liu and Mubayi gave the first finite example that is non-stable. In this paper, we construct another finite family of triple systems $\mathcal{M}$ such that there are two near-extremal $\mathcal{M}$-free configurations that are far from each other in edit-distance. We also prove its Andrásfai-Erdős-Sós type stability theorem: Every $\mathcal{M}$-free triple system whose minimum degree is close to the average degree of the extremal configurations is a subgraph of one of these two near-extremal configurations. As a corollary, our main result shows that the boundary of the feasible region of $\mathcal{M}$ has exactly two global maxima.
An Extremal Graph Problem on a Grid and an Isoperimetric Problem for Polyominoes
Authors: Vince Andrew
Published: April 2024

Let $G$ denote the infinite grid graph with vertex set $\{(a,b)\ : \, a,b \in \mathbb{Z}\}$ and edge set $\big \{ \{u,v\} : |u-v|=1 \;\text{or}\; |u-v| = \sqrt{2} \big \}.$ A question in landscape ecology, restated in graph theoretic terms, asks the following. What is the maximum number of edges in an induced subgraph of $G$ of order $n$? It was conjectured by Taliceo and Fleron  that the maximum is $4n - \big \lceil \sqrt{28n-12} \, \big \rceil$. We prove the conjecture by formulating and solving a discrete version of the classical isoperimeteric problem.
Metric Dimension of a Direct Product of Three Complete Graphs
Authors: Foster-Greenwood Briana , Uhl Christine
Published: April 2024

Classical Hamming graphs are Cartesian products of complete graphs, and two vertices are adjacent if they differ in exactly one coordinate. Motivated by connections to unitary Cayley graphs, we consider a generalization where two vertices are adjacent if they have no coordinate in common. This generalization is equivalent to a direct product of complete graphs. Metric dimension of classical Hamming graphs is known asymptotically, but, even in the case of hypercubes, few exact values have been found. In contrast, we determine the metric dimension for the entire diagonal family of 3-dimensional generalized Hamming graphs. Our approach is constructive and made possible by first characterizing resolving sets in terms of forbidden subgraphs of an auxiliary edge-colored hypergraph.
КОНЦЕПТУАЛЬНІ ЗАСАДИ РОЗРОБЛЕННЯ МОДЕЛЬНИХ НАВЧАЛЬНИХ ПРОГРАМ ДЛЯ ПРОФІЛЬНОЇ ОСВІТИ
Authors: Zasiekina Tеtiana
Published: April 2024

У повідомленні розглянуто проблему розроблення змісту профільної середньої освіти. З’ясовано суть поняття освітній компонент. Запропоновано концептуальні засади укладання модельних навчальних програм обов’язкових освітніх компонентів. Для предметів, що є обов'язковими для складання підсумкової державної атестації у вигляді зовнішнього незалежного оцінювання, модельні навчальні програми мають бути дворівневими. Для предметів і навчальних курсів інших освітніх галузей модельні навчальні програми можуть бути двох типів: амальгамні, які будуються таким чином, щоб розглядати будь-яку глобальну проблему людства з різних точок зору із використанням інформації з різноманітних галузей знань, та модульні, які будуються із окремих самостійних модулей, таким чином, щоб комбінуватись у міжгалузевий курс, відповідний до профілю навчання. Представлено інноваційні моделі формування профілів навчання на основі обов’язкових, але не однакових освітніх компонентів.
Teaching pronunciation in the Indonesian context: A native speaker or ELF model?
Authors: Fitria Risa
Published: April 2024

Today, the numbers of English speakers are geographically and culturally diverse. The discussion on which pronunciation model of English should be introduced to learners of English has become under discussion among English language practitioners. Should English teachers teach pronunciation aiming at near native accents or at intelligibility in which learners can understand different models of English? As a country where English is a foreign language and Non Native-English-Speaking Teachers (NNESTs) are vastly available, Indonesia has posed its uniqueness due to its diverse learners and teachers backgrounds. Under this circumstance, then, there has been a frequent question to whether NNESTs can help learners to develop their English pronunciation. This paper discusses English as a Lingua Franca (ELF) model as suggested by Jenkins (2000) in teaching English pronunciation that can be implemented in the Indonesian context. It suggests that what matters more to learners is improving their intelligibility in English pronunciation rather than aiming for near native accents. English teachers are encouraged to develop a pronunciation instruction that suits the learners needs and interests without discriminating any model of English. Finally, a conclusion is provided with my argument that ELF model will be a better model to be implemented in the teaching of pronunciation in the English classroom in Indonesia.
Implementation of Student Teams Achievement Divisions (STAD) technique: Impact on undergraduate students' English speaking skill
Authors: Fitriyasni Fitriyasni
Published: April 2024

The aim of this study was to investigate whether there was any significant difference in speaking improvement between using Student Teams Achievement Divisions (STAD) and non STAD. The study used the experimental research method and was conducted to the second year students at STAI Tapaktuan of 2017/2018 academic year with an experimental group of 19 students and a control group 20 students, selected through random sampling. Data came from pre-test and post-test which were analyzed by using t-test. The results showed that there was a significance difference in speaking improvement between the students who were taught by using STAD and those who were not. The result of t-test of the post-test was 0.00, (p-value0.05), indicating that H0 was rejected and H? was accepted.
Ortho-ester-substituted diaryliodonium salts enabled regioselective arylocyclization of naphthols toward 3,4-benzocoumarins
Authors: Jiang Ke , Pan Cheng , Wang Limin , Wang Hao-Yang , Han Jianwei
Published: April 2024

Cyclic annulation involving diaryliodonium salts is an efficient tool for the construction of two or more chemical bonds in a one-pot process. Ortho-functionalized diaryliodonium salts have showcased distinct reactivity in the exploration of benzocyclization or arylocyclization. With this strategy of ortho-ester-substituted diaryliodonium salts, herein, we utilized a copper catalyst to activate the C–I bond of diaryliodonium salts in the generation of aryl radicals, thus resulting in an annulation reaction with naphthols and substituted phenols. This approach yielded a diverse array of 3,4-benzocoumarin derivatives bearing various substituents.
Sensitivity Analysis of Marine Reserves and Its Implications as Fishery Management Tool
Authors: Eli I. C. , Bunonyo K. W. , Okrinya A. B.
Published: April 2024

Sensitivity analysis of marine reserves and its implications as a fishery management tool was examined. A fishing free zone was established analytically which led to stability of the fishing free zone by employing linearization, first order differential equation and Jacobian matrix and unstable fishing free zone was obtained. We then apply some protection in the fishing zone and obtain a stable environment with the same techniques. Finally, the use of MATLAB helps us to discover that fishing effort has significant influence on fish biomass. The result reveals that as fishing effort increases, both the fraction of fish stock in the fishing zone and fraction in the reserves zone approaches their respectful extinction limits. It was equally examined that when the biomass in the open zone is heavily fished then there is a significant disparity in stock density between the two zones. An increased flow of transfer from the reserved zone to the fishing zone result in the catch reaching its maximum level as the transfer reaches its peak. Finally, there is predator interference which may lead to extinction of the prey, meanwhile, the protected zone does not allow predator and thus the fishing environment has no implications.
INTERNATIONAL VS. AFRICAN LANGUAGES: THE INFLUENCE OF ARABIC AND ENGLISH ON THE DEVELOPMENT OF THE HAUSA LANGUAGE IN THE HAUSA DIASPORA IN SUDAN
Authors: Osman Muhammad Nooh M.
Published: April 2024

The author discusses an under-researched topic of the language situation in African Sudan with its language diversity and richness of cultures with the focus on Sudanese Hausa. The author also highlights main sociolinguistic rights and obligations of the Hausa population in Sudan. Their native language endures impact of major international languages, such as Arabic and English, affecting Hausa vocabulary, grammar, pronunciation, and writing system. Furthermore, the article is addressed the problem of the changes in the field of linguistic identity and loyalty to the mother tongue of Sudanese Hausa speakers, as well as their mother tongue development in the face of the above-mentioned influences and means for the language preservation. The author represents a dilemma of key advantages and disadvantages in using native African languages as opposed to global international languages in terms of the communication, education, and trade opportunities of the African population. The author addresses the problem of changes in the Hausa vocabulary and linguistic identity of Hausa speakers, and demonstrates the main functions of the Hausa language in Sudan, identifying some of the challenges to the development and preservation of the Hausa language.
Theoretical foundations on Customer Experience (customer experience, NPS, CSAT, CES, Service Balcony, Journey Map)
Authors: Bourne Gastezzi Carlos Ermel , Fernández Rodríguez Martha María , Castillo Andrés
Published: April 2024

A result of the Balcony of Services research project was presented to optimize Customer Experience at the Tecnológico Universitario Espíritu Santo (TES). It responded to the problem of failure to identify opportunities or weaknesses that students face in the educational and administrative services offered by TES, which can affect their educational experience, and was instrumental in understanding and improving student satisfaction. To this end, the specific objectives that were desired to be achieved with the measurement system were defined, among which the following stand out: general customer satisfaction, identifying areas of improvement in the service or evaluating the impact of the improvement initiatives that are implemented. Based on them, the metrics that will help measure the customer experience are determined. Some common metrics include Net Promoter Score (NPS), customer satisfaction (CSAT), customer loyalty, and customer retention. These metrics respond to the industry and specific objectives and will be supported theoretically in this article. The research is theoretical based on theoretical methods such as: analysis and synthesis, induction and deduction from the abstract to the concrete.
Classical Turkish Music Composition with LSTM Self-Attention
Authors: Kaşif Ahmet , Sevgen Selçuk
Published: April 2024

Synthetic symbolic music generation, the process of creating new musical pieces using symbolic representations, has gained significant traction in the field of music informatics and computational creativity. It holds immense potential for various applications, ranging from music education and composition assistance to music therapy and personalized music recommendation systems. Classical Turkish music (CTM) exhibit distinct characteristics regarding Western Tonal Classical Music (WCM) such as melodic organization, formation of rhythmic structure or melodic expressions. This study tackles the challenge of symbolic music composition, focusing on CTM. Unlike WCM, CTM incorporates microtonal intervals. These intervals are smaller than the semitones in Western music, allowing for a more nuanced expression of pitch. This leads to a more diverse set of pitch ranges. The proposed method employs a combination of self-attention and long-short term memory (LSTM) networks to capture long-term relational information and generate realistic CTM compositions. LSTMs effectively model sequential dependencies and improve local relations within musical structures and self-attention improves the context vector, allowing the model to attend to different aspects of the musical context simultaneously. This combination enables the proposed method to generate compositions that are both musically coherent and stylistically consistent with distinct features of CTM. The proposed method was evaluated on two datasets, the CTM dataset and Classical Music Piano (CPM) dataset. The assessment of musical contents is evaluated through melodic similarity and stylistic consistency metrics. The results demonstrate that the proposed method is able to generate musical content that is coherent and produce music that is pleasing-to-hear. Overall, the article presents a novel and effective approach to symbolic music composition, focusing on CTM.
Using Time Series Models in Product Based Order Forecasting
Authors: Yücalar Fatih
Published: April 2024

Production systems play a vital role in maximizing consumer satisfaction by efficiently transforming inputs such as labor, raw materials, and capital into products or services aligned with consumer demands. An order-based production takes place in poultry meat and meat products production facilities, which face various difficulties in meeting changing customer demands and managing the supply of raw materials. To optimize production and increase customer loyalty, these facilities use strategic scheduling, considering their daily production capacity and fluctuating customer orders. In this study, estimating which customer and product type the future order quantities will come from for the relevant facilities, increasing customer satisfaction by facilitating order processes and minimizing storage costs are discussed. With this study, the number of orders was estimated, and it was aimed to meet the orders in the most accurate way. In the estimations, the order data of a poultry meat and meat products production facility between 2013 and 2021 were used. Since the order figures will change every year in cases such as the customer working with the facility, growing, or shrinking, better results have been tried to be obtained with the arrangements made on the data set used and three different data sets have been obtained. Estimation processes were performed for these three data sets using LSTM and Prophet algorithms. While the RMSE value was 7.07 in the LSTM model in experimental studies, this value was obtained as 10.96 for Prophet. In the results obtained, it was observed that the arrangements made on the data set positively affected the accuracy of the estimations and the LSTM algorithm produced better results than the Prophet algorithm.
Verification of Hypervelocity Bulge Red Clump Stars
Authors: Wojtkowska Gabriela , Poleski Radosław
Published: April 2024

We verify candidate hypervelocity red clump stars located in the Galactic bulge that were selected based on the VVV and the Gaia DR2 data by Luna et al. To do so, we analyze data from the OGLE-IV survey: difference images and astrometric time series. We have data for 30 stars out of 34 hypervelocity candidates. We confirmed the high proper motion of only one of these stars and find out that it is a nearby one, hence, not a hypervelocity star. To sum up, we do not confirm the candidate stars as hypervelocity ones. Hence, we disprove the production rate of hypervelocity red clump stars by the central supermassive black hole provided by Luna et al.
Impact of Anisotropic Cosmic-Ray Transport on the Gamma-Ray Signatures in the Galactic Center
Authors: Dörner J. , Becker Tjus J. , Blomenkamp P. S. , Fichtner H. , Franckowiak A. , Zaninger E. M.
Published: April 2024

The very high energy (VHE) emission of the central molecular zone (CMZ) is rarely modeled in 3D. Most approaches describe the morphology in 1D or simplify the diffusion to the isotropic case. In this work, we show the impact of a realistic 3D magnetic field configuration and gas distribution on the VHE γ-ray distribution of the CMZ. We solve the 3D cosmic-ray transport equation with an anisotropic diffusion tensor using the approach of stochastic differential equations as implemented in the CRPropa framework. We test two different source distributions for five different anisotropies of the diffusion tensor, covering the range of effectively fieldline-parallel diffusion to isotropic diffusion. Within the tested magnetic field configuration, the anisotropy of the diffusion tensor is close to the isotropic case, and three point sources within the CMZ are favored. Future missions such as the upcoming CTA will reveal more small-scale structures that are not yet included in the model. Therefore, a more detailed 3D gas distribution and magnetic field structure will be needed.
[C ii] Emission in a Self-regulated Interstellar Medium
Authors: Gurman Alon , Hu 胡 Chia-Yu 家瑜 , Sternberg Amiel , van Dishoeck Ewine F.
Published: April 2024

The [C ii] 157.74 μm fine-structure transition is one of the brightest and most well-studied emission lines in the far-infrared, produced in the interstellar medium (ISM) of galaxies. We study its properties in subparsec-resolution hydrodynamical simulations for an ISM patch with gas surface density of Σ
g
= 10 M
⊙ pc−2, coupled with time-dependent chemistry, far-ultraviolet dust and gas shielding, star formation, photoionization and supernova feedback, and full line radiative transfer. We find a [C ii]-to-H2 conversion factor that scales weakly with metallicity

X

[
C

II
]

=
6.31
×

10

19

Z

′

0.17

cm

−
2

(
K

km

s

−
1

)

−
1

, where

Z

′

is the normalized metallicity relative to solar. The majority of [C ii] originates from atomic gas with hydrogen number density n ∼ 10 cm−3. The [C ii] line intensity positively correlates with the star formation rate (SFR), with a normalization factor that scales linearly with metallicity. We find that this is broadly consistent with z ∼ 0 observations. As such, [C ii] is a good SFR tracer even in metal-poor environments where molecular lines might be undetectable. Resolving the clumpy structure of the dense (n = 10−103 cm−3) ISM is important, as it dominates [C ii] 157.74 μm emission. We compare our full radiative transfer computation with the optically thin limit and find that the [C ii] line becomes marginally optically thick only at supersolar metallicity for our assumed gas surface density.
The Effect of Spatially Varying Collision Frequency on the Development of the Rayleigh–Taylor Instability
Authors: Rodman John , Juno James , Srinivasan Bhuvana
Published: April 2024

The Rayleigh–Taylor (RT) instability is ubiquitously observed, yet has traditionally been studied using ideal fluid models. Collisionality can vary strongly across the fluid interface, and previous work demonstrates the necessity of kinetic models to completely capture dynamics in certain collisional regimes. Where previous kinetic simulations used spatially and temporally constant collision frequency, this work presents five-dimensional (two spatial, three velocity dimensions) continuum-kinetic simulations of the RT instability using a more realistic spatially varying collision frequency. Three cases of collisional variation are explored for two Atwood numbers: low to intermediate, intermediate to high, and low to high. The low-to-intermediate case exhibits no RT instability growth, while the intermediate-to-high case is similar to a fluid-limit kinetic case with interface widening biased toward the lower-collisionality region. A novel contribution of this work is the low-to-high collisionality case that shows significantly altered instability growth through an upward movement of the interface and damped spike growth due to increased free-streaming particle diffusion in the lower region. Contributions to the energy flux from the non-Maxwellian portions of the distribution function are not accessible to fluid models and are greatest in magnitude in the spike and regions of low collisionality. Increasing the Atwood number results in greater RT instability growth and reduced upward interface movement. Deviation of the distribution function from Maxwellian is inversely proportional to collision frequency and concentrated around the fluid interface. The linear phase of RT instability growth is well described by theoretical linear growth rates accounting for viscosity and diffusion.
Photocleavage of Aliphatic C–C Bonds in the Interstellar Medium
Authors: Tajuelo-Castilla Guillermo , Mendieta-Moreno Jesús I. , Accolla Mario , Sobrado Jesús M. , Canola Sofia , Jelínek Pavel , Ellis Gary J. , Martín-Gago José Ángel , Santoro Gonzalo
Published: April 2024

Ultraviolet (UV) processing in the interstellar medium (ISM) induces the dehydrogenation of hydrocarbons. Aliphatics, including alkanes, are present in different interstellar environments, being prevalently formed in evolved stars; thus, the dehydrogenation by UV photoprocessing of alkanes plays an important role in the chemistry of the ISM, leading to the formation of unsaturated hydrocarbons and eventually to aromatics, the latter ubiquitously detected in the ISM. Here, through combined experimental results and ab initio calculations, we show that UV absorption (mainly at the Lyα emission line of hydrogen at 121.6 nm) promotes an alkane to an excited Rydberg state from where it evolves toward fragmentation, inducing the formation of olefinic C=C bonds, which are necessary precursors of aromatic hydrocarbons. We show that the photochemistry of aliphatics in the ISM does not primarily produce direct hydrogen elimination but preferential C–C photocleavage. Our results provide an efficient synthetic route for the formation of unsaturated aliphatics, including propene and dienes, and suggest that aromatics could be formed in dark clouds by a bottom-up mechanism involving molecular fragments produced by UV photoprocessing of aliphatics.
A new genus and three new species of Hahniidae (Araneae) from China
Authors: Wang Lu-Yu , Zhang Zhi-Sheng
Published: April 2024

A new genus of comb-tailed spider (Hahniidae), Sinahahniagen. nov., is described based on three new species from the high-altitude areas of China: Sinahahnia eyusp. nov. (♂♀, Chongqing and Hubei), S. fanjingshansp. nov. (♂♀, Guizhou), and S. yintiaolingsp. nov. (♀, Chongqing). Digital images, illustrations, and a distribution map are provided.
De la variation sans substance
Authors: Jaquet Gabriela
Published: April 2024

Cet article vise à rouvrir le débat à propos de l’importance du structuralisme pour la philosophie de Michel Foucault. Les transformations survenues dans la production foucaldienne entre la fin des années 1960 et le début des années 1970 sont couramment expliquées à partir de sa prise de distance par rapport au structuralisme, qui serait liée à au poids grandissant de F. Nietzsche dans ses travaux. En prenant du recul par rapport à cette interprétation, nous montrons la convergence qui joue, chez Foucault, entre ces deux sources de pensée. De la problématisation du régime d’existence des objets dans l’archéologie à la systématisation des rapports de force dans la généalogie, nous verrons comment la notion de structure se réactive dans le passage d’un moment à l’autre. Dans ce parcours nous prenons appui notamment sur Le Discours philosophique , pour analyser sa notion-clé de « diagnostic ».
Généalogie, alèthurgie et critique
Authors: Ginés Camila
Published: April 2024

Dans cette contribution nous interrogerons la notion d’alèthurgie pour vérifier si la critique dont parle Foucault doit passer par une manifestation de la vérité ou s’il est possible d’inclure dans l’alèthurgie des formes de critique qui refusent l’obligation de dire-vrai sur soi-même – ce qu’on désignera comme « alèthurgie négative ». Ensuite, on cherchera dans l’ Ecce Homo de Nietzsche des stratégies de la critique qui au lieu de s’indexer à la vérité semblent suggérer un renversement parodique qui ancre la critique dans des formes autres de vérité. Enfin, sous l’angle de l’alèthurgie négative, on reviendra sur l’opposition entre parrêsia et rhétorique tracée par Foucault pour remettre en question le primat qu’il accorde à la première.
Les enfants de l’exil
Authors: Estay Stange Veronica , Chalier Jonathan , Tuil Benjamin
Published: April 2024

Dans Survivre à la survie (Calmann-Lévy, 2023), la fille d’exilés politiques chiliens Verónica Estay Stange s’observe traversée d’histoires qui la précèdent et la rendent malade. Elle étudie les manifestations corporelles et discursives de la post-mémoire, ainsi que ses effets politiques sur le Chili.
La condition écologique
Authors: Fussler Guillaume , Morizot Baptiste
Published: April 2024

Dans L’Inexploré (Wildproject, 2023), Baptiste Morizot examine la crise d’habitabilité du monde. Si nous sortons du naturalisme et réanimons les vivants, nous découvrons notre condition écologique : notre vulnérabilité mutuelle.
Les relations juifs-chrétiens éclairées par Paul Ricœur. Idéologie, utopie et dynamiques identitaires en 2 Co 3
Authors: de Curraize Pierre
Published: April 2024

Les réflexions de Paul Ricœur sur l’idéologie et l’utopie permettent d’éclairer les dynamiques identitaires à l’œuvre en 2 Co 3. Dans ce passage, Paul produit un discours dont l’impact symbolique a été fondamental dans la constitution de l’identité chrétienne, notamment dans le rapport entre Nouvelle et ancienne Alliances. Aujourd’hui, les accentuations se sont déplacées dans le dialogue juifs-chrétiens, néanmoins les mêmes dynamiques identitaires continuent d’opérer.
Vivre la mort. À propos de B. Humbert, Vivre la mort. Nous pouvons réapprendre à mourir (2023)
Authors: Tranchant Emmanuel
Published: April 2024

En ce début de 3 e millénaire, le déséquilibre anthropologique de notre humanité – la survenue même du terme dans le langage courant signe son affaiblissement dans notre commun – procède du trouble dans nos représentations de la vie et de la mort.
La presse coloniale en contrepoint : le cas de la Revue des Colonies
Authors: Beliaeva Solomon Maria , Demougin Laure
Published: April 2024

Face au reste de la presse coloniale publiée en métropole, la Revue des Colonies fait figure d’exception. Fondée à Paris par Cyrille Bissette, un « libre de couleur » martiniquais, elle est, de fait, le premier périodique français à avoir été dirigé par des personnes de couleur. Elle s’inscrit dans la vogue des revues parisiennes des années 1830 et est publiée de 1834 à 1842. Parisienne d’origine, elle est ancrée, par son objectif abolitionniste tout d’abord, mais encore par son personnel comme par sa diffusion, dans l’empire colonial français et dans d’autres territoires, anciennement marqués par la présence française. Peu connu aujourd’hui, cet organe de presse exceptionnel a joué un rôle important dans l’accession à la seconde abolition, menant campagne auprès d’un lectorat colonial et métropolitain pour faire adopter une abolition immédiate. Dans le cadre d’un projet de traduction et d’édition numérique commentée en libre accès, le présent article se propose d’étudier comment la Revue des Colonies et ses réseaux dessinent un contrepoint à la presse coloniale.
Chantiers nord-africains . Une revue professionnelle au service de la propagande coloniale
Authors: Piaton Claudine
Published: April 2024

L’article s’intéresse à Chantiers nord africains , une revue professionnelle publiée entre 1928 et 1960 à Alger et dédiée à l’architecture des trois pays du Maghreb (Tunisie, Algérie, Maroc) sous domination française. Il propose, en s’appuyant sur le corpus des projets présentés, de mettre en lumière le rôle de la revue dans le déploiement de la propagande coloniale, et son évolution au cours de la période. À travers l’analyse du corpus propre aux réalisations algériennes, l’article réévalue plus particulièrement les programmes d’habitat réalisés durant la décennie qui précède l’indépendance en 1962. Il met en parallèle la manière dont la revue présente la production architecturale et urbaine locale par rapport à la presse spécialisée métropolitaine, dans l’objectif de nourrir le débat sur un des poncifs de l’histoire de l’architecture qui donne à l’Afrique du Nord des années 1950, un statut de « laboratoire de la modernité ».
Quand le protégé interroge son protecteur : la défense de l’Indochine vue par la presse coloniale à la fin des années 1930
Authors: Eckert Henri
Published: April 2024

La faiblesse de la position française en Indochine en 1940 peut-elle s’expliquer par une absence de prise de conscience des menaces au cours des années qui précèdent l’éclatement de la Seconde Guerre mondiale ? La presse d’Indochine s’est pourtant montrée particulièrement préoccupée de la montée des menaces dans les années 1937 et 1938, mais son approche très politisée des questions de défense n’a pas encouragé les autorités civiles et militaires à prendre au sérieux l’élargissement du recrutement qu’elle proposait pour renforcer l’armée. Il n’est pas non plus certain que l’unanimité des partis politiques (à l’exception des trotskistes) à vouloir renforcer l’armée indochinoise, ait véritablement reflété l’opinion publique, si l’on en croit l’échantillon que représentent les tirailleurs.
Les villes-havres africaines créoles atlantiques avant la colonisation : un essai de définition
Authors: Saupin Guy
Published: April 2024

En Afrique, pendant quatre siècles (1450-1870), l’essor du commerce atlantique a transformé des villages de pêcheurs en places commerciales. La recherche historique les désigne le plus souvent comme « ports d’esclaves » du point de vue de l’histoire maritime ou « villes-forts » sous l’angle de l’histoire urbaine. L’analyse des diverses dimensions du trafic et des acteurs soutenant le développement urbain, des réalités du service portuaire alliant navires et pirogues, plage ou rive et diversité du magasinage urbain, intense travail humain et rareté d’équipements tardifs, et des interrelations entre fonctions portuaires et urbaines à travers les pôles d’urbanisation de la créolisation inégale de la société, conduit à préférer le concept de ville-havre africaine créole atlantique.
Serge Baret (1910-1978) : un préfet face à la « bataille d’Alger » et au 13 mai 1958
Authors: Pervillé Guy
Published: April 2024

Serge Baret, qui fut préfet d’Alger (décembre 1956-mai 1958) puis secrétaire général du gouvernement général (juin-décembre 1958) est resté un illustre inconnu à l’image contradictoire depuis les livres d’Yves Courrière (1969) et du général Massu (1971 et 1972). Les mentions qui en sont faites dans l’historiographie de la guerre d’Algérie le présentent le plus souvent comme un auxiliaire zélé de Lacoste, Massu et Salan. Mais des sources publiques et privées permettent d’en dresser un portrait plus nuancé.
Eau et industrie : quelles pistes pour améliorer la gestion de l’eau par l’industrie en France ?
Authors: Legrand Domitille
Published: April 2024

Comment dépasser le clivage entre la préservation de la qualité et de la disponibilité de la ressource en eau, et la (ré)industrialisation ? Des pistes peuvent être envisagées au niveau d’un territoire industriel. En construisant une collaboration étroite publique privée à cette échelle, les acteurs du développement économique peuvent construire une vision écosystémique de la gestion de l’eau industrielle et renforcer leur solidarité dans la gestion de cette ressource essentielle aux activités industrielles.
L’écu : prouesse, lâcheté et parodie de l’absence. Autour du manuscrit Bodley 264
Authors: Apostu Andreea
Published: April 2024

La richesse des marginalia qui accompagnent le texte du Roman d’Alexandre dans le ms. Bodley 264 démontre « la possible réversibilité du centre et des marges », pour reprendre les mots d’I. Fabry-Tehranchi. Cet article analyse le traitement de l’écu et des armoiries dont il est le porteur dans ces drôleries qui entrent en concurrence avec l’iconographie centrale du manuscrit, mettant en scène l’épanouissement du monde seigneurial au xiv e  siècle. On rencontre, d’une part, une profusion de blasons imaginaires connotés positivement ou négativement, mais aussi un registre parodique qui utilise soit l’écu sans dispositif héraldique soit l’écu anthropomorphe, dont les significations s’apparentent à celles rencontrées dans le topos du combat entre le chevalier et le limaçon, récurrent à l’époque. Miroir de l’identité seigneuriale, le blason est exempt, dans le Bodley 264, de la dérision qui, même si les représentations liminaires magnifient et concordent avec l’iconographie centrale, continue, par moments, à les accompagner.
Proteins of the food-borne pathogen Listeria monocytogenes strain F2365 relevant to lethal acidic stress and during rapid inactivation
Authors: Zhang Donglai , Liu Zongyu , Jia Mingchang , Bowman John P.
Published: April 2024

Listeria monocytogenes, which causes human listeriosis after consumption of contaminated food, can adapt and survive under a wide range of physiological and chemical stresses. In this study, the overall proteomic response of the L. monocytogenes strain F2365—a strain with mutations limiting its ability to tolerate acidic conditions—to progressive non-thermal acidic inactivation was investigated. The challenge process was investigated in the early stationary growth phase where F2365 cultures were acidified (pH 3.0, HCl) at 5 min, 1 h, and 2 h, generating pH 4.8, pH 4.1, and pH 3.5, respectively, with protein abundance measured using iTRAQ. Approximately 73 proteins increased in abundance and 8 declined when acidic stress became non-growth-permissive (pH < 4.1) and inactivation accelerated to approximately 2 log units/h. The functional categories of responding proteins were broad but the proteins involved were specific in nature and did not include whole pathways. Many responses likely accentuate energy conservation and compensate vital metabolic processes. For example, further repression of FlaA, normally repressed under acidic stress, occurs accompanied by an increase in quinol oxidase subunit QoxA and glycerol kinase GlpK. Proteins maintaining cell wall integrity, such as Iap and CwlO, manifested the overall largest abundance increase trend. Virulence proteins were also induced, including InlA, InlC, Hyl, Mpl, PlcA, and PlcB, suggesting that acidification may have mimicked conditions inducing some host survival traits. The overall suite of proteins affected appears to be the "last ditch" responses to non-thermal inactivation above and beyond the standard protections afforded in the stationary-growth phase. The array of proteins found here may provide a deeper understanding of the physiological responses of this pathogen during non-thermal inactivation.
Rational interpolative contractions with applications in extended $ b $-metric spaces
Authors: Sarwar Muhammad , Fawad Muhammad , Rashid Muhammad , Mitrović Zoran D. , Zhang Qian-Qian , Mlaiki Nabil
Published: April 2024

In this manuscript, utilizing interpolative contractions with fractional forms, some unique fixed-point results were studied in the context of extended $ b $-metric spaces. For the validity of the presented results some examples are given. In the last section an existence theorem is provided to study the existence of a solution for the Fredholm integral equation.
La tintura d’Arte maggiore in una bottega pratese di fine Trecento
Authors: Ammannati Francesco
Published: April 2024

Tra tutte le fasi in cui si frazionava in età preindustriale il complesso processo produttivo identificabile come «ciclo laniero», la tintura rappresentava senza dubbio un passaggio cruciale dal punto di vista tecnico e, di conseguenza, economico. Uno dei mordenti più utilizzati in epoca preindustriale, e perciò elemento presente in modo massiccio fin dal Medioevo nel sistema di scambi internazionali, era l’allume. In questo breve contributo sarà analizzata l’attività della bottega di tintura di Niccolò Del Rosso e Francesco Datini attiva a Prato alla fine del Trecento, in particolare quel ramo di attività caratterizzato dall’uso di sostanze tintorie come la robbia e dalla necessità di preparare mediante mordenzatura i prodotti da sottoporre a lavorazione: l’Arte Maggiore.