bluuebunny/crossref_metadata_2025_split huggingface dataset:
Iron and manganese co-limit the growth of two phytoplankton groups dominant at two locations of the Drake Passage
Authors: Balaguer Jenna , Koch Florian , Hassler Christel , Trimborn Scarlett 
Published: March 2022

AbstractWhile it has been recently demonstrated that both iron (Fe) and manganese (Mn) control Southern Ocean (SO) plankton biomass, how in particular Mn governs phytoplankton species composition remains yet unclear. This study, for the first time, highlights the importance of Mn next to Fe for growth of two key SO phytoplankton groups at two locations in the Drake Passage (West and East). Even though the bulk parameter chlorophyll a indicated Fe availability as main driver of both phytoplankton assemblages, the flow cytometric and microscopic analysis revealed FeMn co-limitation of a key phytoplankton group at each location: at West the dominant diatom Fragilariopsis and one subgroup of picoeukaryotes, which numerically dominated the East community. Hence, the limitation by both Fe and Mn and their divergent requirements among phytoplankton species and groups can be a key factor for shaping SO phytoplankton community structure.
Achieving an ultrahigh direct-current voltage of 130 V by semiconductor heterojunction power generation based on the tribovoltaic effect
Authors: Wang Zhaozheng , Zhang Zhi , Chen Yunkang , Gong Likun , Dong Sicheng , Zhou Han , Lin Yuan , Lv Yi , Liu Guoxu , Zhang Chi 
Published: March 2022

A semiconductor DC triboelectric nanogenerator (SDC-TENG) with ultrahigh DC voltage and power density using the GaN/Si heterojunction, the maximum DC voltage is up to 130 V, which set a voltage record for the tribovoltaic effect.
Multi‐granularity decision rough set attribute reduction algorithm under quantum particle swarm optimization
Authors: Yang Xuxu , Wang Xueen , Kang Jie 
Published: March 2022

AbstractThe existing attribute reductions are carried out using equivalence relations under a complete information system, and there is less research on attribute reductions of incomplete information systems with new theoretical models such as multi‐granularity decision rough sets. To address the above shortcomings, this paper first makes up a pessimistic‐optimistic multi‐granularity decision rough set model based on tolerance relations in incomplete information systems. The concepts of attribute importance and approximate distribution quality are introduced into the model to form an attribute reduction algorithm under incomplete information systems. Secondly, due to the NP‐hard problem of attribute reduction, in order to further ensure the accuracy of the reduction result, this paper proposes a pessimistic‐optimistic multi‐granularity reduction algorithm under quantum particle swarm optimization. Experimental results on multiple‐attribute data proved that the algorithm proposed in this paper can effectively attribute reduction in the decision table with missing data. At the same time, the algorithm of this paper has the role of iterative optimization search, ensuring the accuracy of the reduction results and increasing the applicability of multi‐granularity decision rough sets.
Designing of a non‐fragile robust predictive controller for uncertain systems with time‐varying delay: A delay‐range‐dependent approach
Authors: Baneshi Fateme , Ghaffari Valiollah 
Published: March 2022

AbstractThis study addresses a new delay‐dependent non‐fragile robust model predictive controller for a class of uncertain continuous‐time systems with time‐varying delay subjected to constrained input and perturbed controller gain. The uncertainties in system parameters and controller gain are considered as general additive forms. The proposed controller can provide a suitable linear feedback control law depending on delay such that robust performance is achieved to the possible existence of uncertainties. To this end, an optimisation problem is formulated to minimise the upper‐bound of the cost function involving some conditions in terms of linear matrix inequalities, utilising the information of lower‐and upper‐bounds of time‐varying delay. By including information regarding the delay range in the quadratic function, the ability to have less conservative results compared to the related works in literature is provided. The effectiveness of the proposed technique is illustrated through a comparison with recent works.
Intravenous Foreign Body at the Hand: Case Report
Authors: Couceiro Jose , Garcia-Valladares Elena , Fernandez-Divar Jose , Sanchez-Crespo Manuel , Ayala Higinio , Canto Fernanado Del 
Published: March 2022

AbstractIntravenous foreign bodies following trauma to the hand are relatively uncommon with sparse reports of this condition being published in the literature. They have been reported to migrate as far as the thoracic cavity and the heart. In the following case report, we describe a case of an intravenous foreign body following hand trauma, and the treatment and potential complications are also discussed.
Current Approach for Diagnosis and Treatment of Adrenal Tuberculosis—Our Experience and Review of Literature
Authors: Gupta Stuti , Ansari Md Abu Masud , Gupta Arun Kumar , Chaudhary Poras , Bansal Lalit Kumar 
Published: March 2022

AbstractAddison's disease was first described by Thomas Addison in 1855. He demonstrated the destruction of bilateral adrenal gland by tuberculosis (TB) in six patients. Since then, the incidence of TB has declined in the Western world, but in developing countries, it is still the most common cause of adrenal insufficiency. Because of the introduction of antituberculous chemotherapy, the incidence of adrenal TB has been declined in the past decades. The most common symptoms are nonspecific; therefore, diagnosis is often delayed, and patients may first present with a life-threatening adrenal crisis. The most commonly identified organism for adrenal failure in adrenal TB is Mycobacterium tuberculosis infection. Adrenal TB involves bilateral adrenal glands more frequently than unilateral glands. Computed tomography (CT) scan and magnetic resonance imaging (MRI) are useful investigations to differentiate between tuberculous Addison's disease and the other causes of adrenal insufficiency. In CT scans or MRI, features of adrenal TB are bilateral adrenal enlargement and peripheral rim enhancement with or without calcifications. Antituberculous drugs, biochemical monitoring of adrenal function, and steroid therapy are essential for the management of adrenal TB and adrenal insufficiency. Here, we describe a case of adrenal TB with abscess formation followed by a review of the current literature of adrenal TB for better diagnosis and management of this condition.
Delayed Granulomas as a Complication Secondary to Lip Augmentation with Dermal Fillers: A Systematic Review
Authors: Trinh Lily Nguyen , McGuigan Kelly Christine , Gupta Amar 
Published: March 2022

Abstract
Introduction Lip augmentation with dermal filler is rising in popularity. There are generally minimal side effects that are mild and transient. However, long-term complications may occur and include lumps, bumps, nodules, or granulomas. To better understand this uncommon but challenging outcome, we aim to perform a thorough systematic review of the published literature related to nodule or granuloma formation after cosmetic soft tissue augmentation of the lips.
Methods A search of published literature was conducted in accordance with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines in April 2021 and included PubMed, ScienceDirect, Embase, Google Scholar, and Cochrane databases. The Medical Subject Headings (MeSH) terms used included the following terms: “lip filler,” “hyaluronic acid,” “lip injection,” “lip augmentation,” “silicone,” “poly-L-lactic acid,” “calcium hydroxyapatite,” “polymethylmethacrylate,” “complications,” “reaction,” “granuloma,” and “nodule.” All studies were reviewed by two independent reviewers. Any discrepancies were resolved by a third reviewer.
Results The initial search for filler-related nodules or granulomas yielded 2,954 articles and 28 were included in the final analysis containing 66 individual cases of lip nodules. All but one patient was female. The mean age was 50 years. Nodules presented on average 35.2 months or 2.9 years after initial treatment. Thirty-seven nodules underwent histological analysis, the majority of which identified the presence of a foreign-body granuloma. Silicone was the most reported filler used followed by hyaluronic acid. Most cases resolved following multiple treatments including oral antibiotics or steroids followed by surgical excision.
Conclusion Understanding the sequelae of lip augmentation with filler products allows clinicians to provide safe and effective treatment. Nodules that present months to years following dermal treatment may represent a foreign-body granuloma. A combination of oral antibiotics, intralesional or oral steroids, and surgical excision successfully treated the majority of cases in our study.
Cecal Bascule in a COVID-19 Positive Patient: Case Report
Authors: Curmi Arthur , Cuschieri Robert 
Published: March 2022

AbstractCecal volvulus is an uncommon cause of acute intestinal obstruction accounting for around 10% of intestinal volvuli. There are three main variants of cecal volvuli including the axial, loop, and bascule types. Diagnosis is confirmed via a computed tomography scan and surgery is the mainstay treatment due to a high risk of morbidity and mortality. Here we report a rare presentation of cecal volvulus in a COVID-19 positive patient that was complicated by an anastomotic leak.
Validating a test of L2 routine formulae to detect pragmatics learning in stay abroad
Authors: Roever Carsten , Higuchi Yuki , Sasaki Miyuki , Yashima Tomoko , Nakamuro Makiko 
Published: March 2022

Abstract
There has long been interest in the effect of stay abroad on pragmatic development in second language (L2) pragmatics research. However, few testing instruments exist to assess pragmatics learning in stay abroad and provide information about learners’ development to help institutions evaluate the success of stay abroad programs. In this study, we describe the adaptation and validation of Roever’s (2005) test of second language routine formulae to be used large-scale with Japanese stay-abroad learners. We follow Kane’s (2006) argument-based approach to validation, evaluating the first four inferences: Domain description, Evaluation, Generalization, and Explanation. We also investigate the test’s practicality within the institutional setting of intended use. We find evidence supporting the use of the test for providing information on pragmatics learning during stay abroad. The test can differentiate between low- and high-ability learners, shows adequate reliability, and reflects the roles of proficiency and exposure in pragmatics learning in stay abroad contexts. The test is also practical and requires few resources. Further steps, such as the investigation of the Extrapolation and Decision inference, are discussed.
Optimization of nanoparticle yield for biomedical applications at femto-, pico- and nanosecond laser ablation of thin gold films in water
Authors: Nastulyavichus Alena , Kudryashov Sergey , Ionin Andrey , Gonchukov Sergey 
Published: March 2022

Abstract
The paper considers the generation of colloidal gold nanoparticles by laser ablation of thin gold films of variable thickness in deionized water. The effect of laser fluence, pulsewidth, exposure, and film thickness on the generation of nanoparticles, its productivity and ergonomicity, particle dispersion and size is studied along with the related ablative mass loss from the films.
Incompatibility in restricted operational theories: connecting contextuality and steering
Authors: Plávala Martin 
Published: March 2022

Abstract
We investigate the connection between steering and contextuality in general probabilistic theories. We show that for a class of bipartite states the steerability of the state by given set of measurements is equivalent to non-existence of preparation noncontextual hidden variable model for certain restricted theory constructed from the given state and measurements. The connection between steering and contextuality is provided by the concept of incompatibility in restricted theories, which we also investigate.
Special synchronous motors for driving reclamation pumps
Authors: Strizhkov I G , Chesnyuk E N 
Published: March 2022

Abstract
Possibilities of contactless excitation of a synchronous motor of a special design intended for driving pumps in irrigated agriculture are considered. The possibility of using an asynchronous machine with a contactless exciter is considered. An asynchronous machine with a rotating semiconductor unregulated rectifier is installed on the common shaft of the main machine (motor) and exciter.
Studying waters of the Volgo-Don canal for the purpose of irrigation
Authors: Kozinskaya O V , Denisova M A , Bocharnikov V S , Bocharnikova O V , Kuznetsova, T V Repenko N V , Meshcheryakov M P 
Published: March 2022

Abstract
The data on the quality of water for irrigation and measures to improve the uniformity of distribution of artificial rain along the water pipeline of the sprinkler in order to increase the quality of irrigation are given. It has been established that the uniformity of irrigation is affected by the quality of water, in particular the presence of small particles and impurities in it, which clog the sprinklers, leading to the cessation of water supply to the irrigated area. Plants do not get enough moisture, resulting in lower yields. Studies on the uniformity of the distribution of the rain layer when irrigating with the Don-K sprinkler showed that after the installation of a water purification system in front of the water pipeline input, a more uniform distribution of rain was observed along the water-conducting belt of the farm. The content of undissolved impurities decreased by a factor of 10, and the irrigation rate increased by 15%.
Biological accumulation of zinc and copper in the «Soil-plant» system in the conditions of the south of Western Siberia
Authors: Zharkova N N 
Published: March 2022

Abstract
The purpose of the work was to study the intensity of biological accumulation of zinc and copper Tanacetum vulgare in the conditions of Western Siberia. Field experiments were carried out in the period 2012-2015 on meadow-chernozem soil of the southern forest-steppe of the Omsk region. The medicinal crop Tanacetum vulgare was chosen as an object of research. Copper and zinc fertilizers in acetate forms were applied in the background (N135P45K45). The content of mobile forms of Zn and Cu in soil and plant samples was determined by atomic absorption method. When zinc and copper fertilizers were applied, the content of mobile forms of Zn and Cu in the soil increased compared with the control and the ground. At the same time, application of micronutrient fertilizers did not lead to excess of MAC. The content of zinc in medicinal raw material Tanacetum vulgare changed from 25.3 to 48.0 mg/kg; of copper from 4.3 to 8.3 mg/kg after application of micronutrient fertilizers. The content of trace elements in medicinal raw material Tanacetum vulgare did not exceed MAL (Cu-30 mg/kg, Zn-50 mg/kg). To estimate the intensity of absorption of trace elements Tanacetum vulgare used coefficients of biological accumulation (Cba
Zn, Cu). According to values of coefficients of biological accumulation, Tanacetum vulgare intensively absorbed zinc (Cba
= 4, 59-16, 8) and very intensively and intensively copper (Cba
= 23, 33-48, 82). Thus, the studies showed that this crop is a copper concentrator, as Cba
Cu > Cba
Zn.
Reduction of current transformers errors of rural electrical networks when operating at low currents
Authors: Dorozhko S V , Shaimordanova M S 
Published: March 2022

Abstract
The peculiarities of agricultural power supply are reduced reliability of power supply, increased voltages, and a three-phase – single-phase power distribution system and reduced quality of voltage at power receivers. A key element in rural electrical networks is the power transformer. To detect the deformation of the windings of the power transformer of rural electrical networks, accurate measurements of the currents in the neutral of this transformer are required. Current transformers installed in the neutral do not provide sufficient accuracy at currents less than 5 % of the nominal. A method is proposed for reducing the current transformer errors when operating at low currents, considering the nonlinearity of the magnetization characteristics of the core. The results of calculating the compensation of errors of a laboratory sample of a current transformer are presented.
Increasing the germination of wheat seeds using the technology of pressing seeds into the sowing furrows
Authors: Danilov M V , Kulaev E V , Vysochkina L I , Kalugin D S , Maliev V K 
Published: March 2022

Abstract
The article presents the results of research on a new design of a combined disc coulter, which makes it possible to implement the technology of sowing wheat by pressing the seeds into the bottom of the furrow. The material for the study was the seeds of winter wheat variety “Zustrich”. Studies have shown that the maximum pressing force of winter wheat seeds is much less than the force of their destruction, the depth of pressing is from 5 to 8 mm, the speed of the seeder is about 10 km · h−1. On the basis of analytical studies, the design parameters and operating modes of the combined disc coulter were substantiated, which made it possible to obtain soil density at the bottom of the sowing furrow of 1.15 t · m−3, seed germination – 86, 9%; uniformity of seed distribution in a row – 83, 6%, which fully complies with agricultural requirements.
Automatizing process of electroimpulse treatment of plant raw materials
Authors: Yudaev I , Kokurin R , Daus Yu , Ivanov D 
Published: March 2022

Abstract
Extraction of juice and removal of excess liquid from vegetable raw materials (vegetables, fruits, melons and crops, etc.) are the main technological operations during juice processing. The quality and quantity of the finished product depend on the efficiency of its implementation, for example, the drying process that determines the prime cost of its production. Therefore, technologies that allow solving this problem automatically in the most efficient way are relevant and require close attention not only of processing enterprises of various ownership forms, but also of research scientists. Such technologies include electric impulse processing of raw materials of plant origin before extraction or removal of moisture in the manufacture of juices, mashed potatoes, pastes, the drying of melons and fruits, etc. This technology has a great prospect, as it is characterized by low energy consumption, environmental cleanliness, food safety and can be fully automated. The control system of electric impulse processing, first of all, should receive primary information about the depth of the effects and the destruction of the intra-cellular structure of plant raw materials. The application of the received information allows electric impulse processing to adjust the frequency of the acting pulses and the voltage amplitude. This approach leads to reduction in the electrical energy input into the vegetable raw material for the destruction of cellular structures and, accordingly, to decrease in its consumption. The conducted studies allow asserting that it is best to use information on the change in the phase angle as the received information on the change in the electrophysical properties of plant tissue. The designed automatic system can be integrated with minimal constructive modifications into already existing lines for the processing of vegetable raw materials.
Bioremediation of contaminated light-chestnut soils in southern Russia
Authors: Kalmykova E V , Belyaev A I , Yu Petrov N , Pugacheva A M , Aksenov M P 
Published: March 2022

Abstract
The paper presents the results of studies of agrochemical and microbiological indicators of oil contaminated soils in southern Russia when using a biological preparation in the period from 2013 to 2019. Light-chestnut soils, tomato test culture, and biological preparation Biodux were chosen as objects of the study. The soil was contaminated with oil of various concentrations. Phytotoxicity of the soil was estimated by germination, the length of the above-ground part, the root, and the total biomass of plants. The study revealed that phytotoxicity and changes in the agrochemical indicators of light-chestnut soils in southern Russia are directly related to the concentration of applied oil. Thus, samples contaminated with 10 % oil show the most adverse effect on the studied parameters. Changes in the biological activity of soils contaminated with oil products primarily affected the growth, development and, ultimately, the yield of crops. The studied preparation Biodux formed resistance to stressful growing conditions in tomato crops and activated their growth and biological processes. Based on the data obtained, light-chestnut soils are not resistant to oil contamination in terms of biological indicators.
Usage of high voltage impulse generator to research the process of electropulse destruction of locust larvae in the soil
Authors: Yudaev I , Kokurin R , Eviev V , Belyaeva B , Sumyanova E , Romanyuk N 
Published: March 2022

Abstract
In accordance with announced technology, a laboratory research complex is needed for researching the influence of electropulse effects on locust larvae (capsules) and identification of the processing modes and construction design required to cause their irreversible (fatal) damage. In this regard, a schematic diagram of a laboratory research complex for electropulse processing has been developed and its structure has been determined. A separate question concerned a source of high voltage and a shaper of high-voltage impulses. A special design of a high-voltage impulse generator has been developed. This design can produce impact impulses of various durations - the impulse duration depends on the capacitive storage; with maximum amplitude of 16 kV and current per impulse of up to 400 A. The generator uses a capacitive storage discharge through a thyratron controlled by a microcontroller to the load. The proposed high-voltage impulse generator is necessary for researching the effect of electropulse high-voltage technology on the irreversible damage of locust larvae located in the soil layer, and for the experimental identification of the operating modes of the electrical part of the designed electrotechnological system, which allows for destruction of locust capsules directly in the field. The designed high-voltage generator was tested in operational mode when working with a load, which was the soil volume placed between the electrodes in the working chamber. The shape of the operational impulse and its parameters comply with predefined characteristics for electropulse cultivation of soil massif with locust larvae (capsules). After the tests, minor structural adjustments were made, and the generator itself was prepared for experimental studies in the laboratory.