bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ceratophyllum demersum (coontail).
Authors: Dawson Hugh 
Published: March 2021

Abstract

C. demersum is a cosmopolitan submerged aquatic species that has probably already invaded most of its potential exotic range. It has the advantages of being a perennial surviving well over-winter in deeper water and by growing both by asexual reproduction of broken or complete stems and by sexual reproduction of very many seeds. It has a wide ecological tolerance and grows relatively fast. Disturbance of the water body results in increases in growth through changes in nutrient availability but also in faster dispersal around water bodies allowing greater competition with less vigorous species.
Hedychium coronarium (white butterfly ginger lily).
Authors: Djeddour Djamila , Rojas-Sandoval Julissa , Acevedo-Rodríguez Pedro 
Published: March 2021

Abstract

H. coronarium is invasive in shallow water systems, along streams and in waterlogged areas in the tropics and subtropics. Once established, it is difficult to control because it reproduces vegetatively. Its attractive flowers make it a desirable ornamental plant.
Hymenula cerealis (Cephalosporium stripe).
Authors: Murray Timothy D. 
Published: March 2021

Abstract

H. cerealis is a pathogen that causes a vascular wilt disease of gramineous hosts known as Cephalosporium stripe. It is the only known vascular wilt of small grasses and small cereal grains with a fungal aetiology. It causes what is referred to as a 'single-cycle' disease because it does not have an airborne, repeating phase. As such, it is not an invasive species per se.
Rhaponticum repens (Russian knapweed).
Authors: Schaffner Urs 
Published: March 2021

Abstract

R. repens is a deep rooted perennial that is native to Eurasia. It was accidentally introduced into North America as a contaminant of seed and spread rapidly. R. repens can be a serious crop pest in its native range and elsewhere. It forms large monotypic stands that reduce diversity and degrade forage quality on rangelands. As it is allelopathic and survives under a variety of conditions, it has been become an invasive exotic wherever it is imported. It has been declared a noxious weed in 18 US states (USDA-NRCS, 2016) and four Canadian provinces (Rice, 2003).
Lythrum salicaria (purple loosestrife).
Authors: Pasiecznik Nick 
Published: March 2021

Abstract

L. salicaria, an Old World native, is a highly invasive species of wetlands in North America, beginning to spread rapidly about 140 years after its accidental introduction around 1800. It is a very variable species with an ability to occupy numerous habitats and substrates with the exception of dry places. Its spread and persistence in ecosystems is supported by very high seed production, a vigorous and persistent root system and rapid growth. It is an invasive species and/or noxious weed in almost all states and provinces of Canada and the USA where it is a serious threat to many sensitive wetland ecosystems.
Megathyrsus maximus (Guinea grass).
Authors: Rojas-Sandoval Julissa , Acevedo-Rodríguez Pedro 
Published: March 2021

Abstract

M. maximus is a highly successful invader in tropical and warm temperate areas after introduction as fodder. It can spread from seed, is highly competitive with native flora, and while it is highly fire resistant it can quickly spread to invade gaps left in natural vegetation after fire.
Alternaria japonica (pod spot of radish).
Authors:   USA, USDA-ARS
Published: March 2021

Abstract

A. japonica is a seed-borne pathogen of plants in the Brassicaceae. No sexual state is known for the fungus, and identification based on conidial and cultural morphology is difficult. The production of chlamydospores, structures that should allow it to survive in soil or plant debris, does distinguish it from similar species. It is known to occur in certain regions on all continents, but is generally a minor pathogen compared to other species on the same hosts. Its major impact consists of reduced germination of contaminated seeds and disease and death of seedlings. It is not listed as being of concern by phytosanitary agencies, but imported seed lots can be and are rejected due to its presence, because once introduced, it can persist and then spread by means of airborne conidia.
Rhyzopertha dominica (lesser grain borer).
Authors: Wakil Waqas 
Published: March 2021

Abstract

Females of R. dominica lay between 200 and 500 eggs in their lifetime. The eggs are laid loose in grain. The lowest temperature at which R. dominica can complete development is 20°C; at this temperature, the development from egg to adult takes 90 days. The fastest rate of development occurs at 34°C; at this temperature the egg takes 2 days, the larvae 17 days, and the pupae 3 days to complete development. R. dominica is unable to complete development between 38 and 40°C. Adults live for 4-8 months. Under optimal conditions of 34°C and 14% grain moisture content, there is a 20-fold increase in the population of R. dominica after 4 weeks. It can successfully infest grain at 9% moisture content, but has higher fecundity, a faster rate of development, and lower mortality on grain of a higher moisture content. Adult males produce an aggregation pheromone in the frass that attracts both male and female adults. Adults are good flyers, and can be trapped in pheromone-baited flight traps placed several kilometres from grain stores. Adults can bore into intact kernels. The larvae of R. dominica are mobile.
Rhopalosiphum maidis (green corn aphid).
Authors: Whittaker Angela 
Published: March 2021

Abstract

R. maidis is probably the most important pest of cereals in tropical and warm temperate climates. It causes direct feeding damage by the removal of plant sap from young leaves and growing points, and indirect damage via honeydew secretions and its ability to spread virus diseases. It causes particularly heavy economic losses in maize, sorghum, and barley. However, although it attacks wheat, oats, rye and other many cereals, significant economic losses on these crops are less common.
Cinchona pubescens (quinine tree).
Authors: Clements David 
Published: March 2021

Abstract

C. pubescens is a source of the drug quinine, used to control the effects of malaria, and Cinchona bark was being used in Europe as a treatment for malaria as early as the 1650s, before the plant was authenticated botanically (Raintree, 2003). The Jesuits had introduced it from the New World, hence the name Jesuit's bark or powder (Prendergast and Dolley, 2001). The bark was collected in its native Andean range and probably comprised a mixture of species including C. pubescens. The native range of C. pubescens extends from Andean South America in Bolivia north to Costa Rica. It was widely distributed throughout the tropics as a source of quinine, particularly by the British during the latter half of the 1800s (Moureau, 1945) and is probably still held in many tropical botanical gardens worldwide for its medicinal interest.
Falcataria moluccana (batai wood).
Authors: Pasiecznik Nick 
Published: March 2021

Abstract

F. moluccana is one of the fastest growing multipurpose tree species and coupled with other positive attributes, it is a suitable species for plantation programmes and agroforestry applications in the humid tropics. It has many uses but it is commonly planted as an ornamental and shade tree. Other uses of the species being tested include alley farming, intercropping in forest plantations and reforestation.
Ziziphus spina-christi (Christ's thorn jujube).
Authors: Rojas-Sandoval Julissa 
Published: March 2021

Abstract

Z. spina-christi is a widespread drought-tolerant tree of the Middle East, northeastern Africa and northwestern India. More formally, its distribution is sub-Sudano-Decanian, with penetrations into the Saharo-Sindian and adjacent Afro-tropical regions. When fully grown, it is a stately tree with an oval, intricately branched crown providing shade, but under the effects of ill-management and excessive browsing, it often occurs as a shrub. Average life span is reported to be 50-75 years (Vashishtha, 1997).
Cluster spin-glass-like dynamics in Mn-rich La2Ni0.5Mn1.5O6 ferromagnetic insulator
Authors: Nasir Mohammad , Kumar Sunil , Bera Anup Kumar , Khan Mahmud , Yusuf S M , Sen Somaditya 
Published: March 2021

Abstract
We report on the physical properties of Mn-rich, nonstoichiometric La2Ni0.5Mn1.5O6 ferromagnetic insulator, prepared by sol-gel method. The single-phase orthorhombic Pbnm structure for the compound was confirmed by x-ray diffraction measurements. Dc magnetization measurements revealed a high saturation magnetization of ∼5.95 μ
B/f.u. at 5 K, and a ferromagnetic to paramagnetic transition at ∼162 K. Ac magnetic susceptibility measurements confirmed a broad frequency-dependent anomaly at lower temperatures indicating the presence of spin-glass type magnetic interactions. The ac susceptibility data have been discussed within the framework of the critical slowing down model and Vogel–Fulcher law, and confirmed the cluster spin-glass dynamics with a relaxation time of the order of 10−5 s. The valence of Ni and Mn ions was verified from the x-ray absorption near edge structure spectroscopy. The origin of cluster spin-glass state was discussed in terms of several possible magnetic exchange interaction pathways among Ni and Mn ions.
Insight into intrinsic ferromagnetism in quasi-2D Cr5−y
Te8
Authors: Chen Y S , Kuo C N , Lue C S , Lin J G 
Published: March 2021

Abstract
Cr5Te8 is a half metal with 2D van der Waals ferromagnetic structure and its magnetic properties can be tuned by changing the proportionality of Cr and Te. We report an investigation of magnetization and magnetic anisotropy near the critical transition region of a Cr5−y
Te8 single crystal with the static and dynamic probes, to unravel the nature of field-dependent spin-spin interactions. The magnetic transition temperature T
C increasing from 255 K (at near zero-field) to 279 K (at 65 kOe along the ab-plane) has been identified. Accordingly, a phase diagram of field versus transition temperature has been established. From the analysis of the field dependence of the critical behavior, we provided evidence that the scenario of 2D Heisenberg-type interactions can be employed to interpret the field-dependent magnetic transitions in Te-rich Cr4.8Te8. The precise picture for the field-reduced spin-spin interaction range has been obtained. The conclusion drawn from the present study demonstrated that Cr4.8Te8 is a promising candidate for the spintronic applications with a tunable magnetic transition temperature.
Multifunctional cantilevers for simultaneous enhancement of contact resonance and harmonic atomic force microscopy
Authors: Wang Wenting , Zhang Kaidi , Zhang Wenhao , Hou Yaoping , Chen Yuhang 
Published: March 2021

Abstract
To enhance contact resonance atomic force microscopy (CR-AFM) and harmonic AFM imaging simultaneously, we design a multifunctional cantilever. Precise tailoring of the cantilever’s dynamic properties is realized by either mass-removing or mass-adding. As prototypes, focused ion beam drilling or depositing is used to fabricate the optimized structures. CR-AFM subsurface imaging on circular cavities covered by a piece of highly oriented pyrolytic graphite validates the improved CR frequency to contact stiffness sensitivity. The detectable subsurface depth and cavity radius increase accordingly by using the multifunctional cantilever. At the same time, the free resonance frequency of the second mode is tuned to an integer multiple of the fundamental one. Harmonic AFM imaging on polystyrene and low-density polystyrene mixture shows the improved harmonic amplitude contrast and signal strength on the two material phases. The multifunctional cantilever can be extended to enhance other similar AFM operation modes and it has potential applications in relevant fields such as mechanical characterization and subsurface imaging.
Recent applications of novel laser techniques for enhancing agricultural production
Authors: Nadimi Mohammad , Sun Da-Wen , Paliwal Jitendra 
Published: March 2021

Abstract
With ever increasing world population, the demands on food safety and security are also expected to substantially increase over the next few decades. As agronomic practices, agricultural mechanization and plant breeding technologies have already been extensively exploited, novel techniques need to be explored and implemented to enhance crop production. To this end, the emerging area of laser-based technologies has shown potential to bring about another revolution in enhancing quantity, quality, and safety of foods. This paper presents an exhaustive review of the use of five non-invasive non-destructive laser-based techniques in agriculture, namely laser biostimulation, light detection and ranging, laser land levelling, laser-induced fluorescence spectroscopy, and Raman spectroscopy. Herein we provide the advantages, status quo and challenges of each of these techniques and conclude with recommendations for future work. A comprehensive review of literature reveals the untapped potential of laser applications in agriculture that has the potential to unleash the next agricultural revolution.
A stationary Kyle setup: microfounding propagator models
Authors: Vodret Michele , Mastromatteo Iacopo , Tóth Bence , Benzaquen Michael 
Published: March 2021

Abstract
We provide an economically sound micro-foundation to linear price impact models, by deriving them as the equilibrium of a suitable agent-based system. In particular, we retrieve the so-called propagator model as the high-frequency limit of a generalized Kyle model, in which the assumption of a terminal time at which fundamental information is revealed is dropped. This allows to describe a stationary market populated by asymmetrically-informed rational agents. We investigate the stationary equilibrium of the model, and show that the setup is compatible with universal price diffusion at small times, and non-universal mean-reversion at time scales at which fluctuations in fundamentals decay. Our model suggests that at high frequency one should observe a quasi-permanent impact component, driven by slow fluctuations of fundamentals, and a faster transient one, whose timescale should be set by the persistence of the order flow.
Crawling evacuation from a room: experiment and modeling
Authors: Guo Ning , Ding Jian-Xun , Ding Zhong-Jun , Zhu Kong-Jin , Wu Chao-Yun 
Published: March 2021

Abstract
In this paper, the impact of crawling on evacuation dynamics is investigated via experiments and modeling. Two types of experiments are implemented, in which pedestrians are asked to escape out of a virtual room with an exit either by crawling or walking. The experiments show that escaping by crawling will increase the average evacuation time. Moreover, it is found that the evacuation time gap of crawling is generally larger than that of walking. To model the evacuation dynamics, an improved heuristic-based model is proposed in which the pedestrians’ shape is represented by multiple connected circles rather than a single circle. Such representation can help the pedestrians keep a safer distance from others. Simulation results are in agreement with the experimental ones.
Neural networks and regression analysis in the diagnosis of breast cancer
Authors: Dubovskaya Victoria , Losev Alexander 
Published: March 2021

Abstract
This work is devoted to the study of the dependence of the temperature fields of the mammary glands on external conditions and the parameters of the anamnesis, and preliminary examination of patients. As a result, it was possible to significantly improve the space of thermometric diagnostic signs intended for the intelligent system. The initial set of highly informative diagnostic thermometric signs was earlier obtained by A. G. Losev and V. V. Levshinsky. To take into account the influence of external factors on the temperature during the formation of the feature space, regression models were proposed. They were built by the method of neural network modeling. These models have sufficient performance and low error value, which allows them to be used in practice. The use of neural networks made it possible to scale the database of thermometric data obtained using a combined and EMC-sensor. As a consequence, it became possible to analyze the influence of the previously revealed heterogeneity of data in the context of age and diameter of the mammary glands on the effectiveness of highly informative diagnostic signs.
Construction of stochastic hybrid path integrals using operator methods
Authors: Bressloff Paul C 
Published: March 2021

Abstract
Stochastic hybrid systems involve the coupling between discrete and continuous stochastic processes. They are finding increasing applications in cell biology, ranging from modeling promoter noise in gene networks to analyzing the effects of stochastically-gated ion channels on voltage fluctuations in single neurons and neural networks. We have previously derived a path integral representation of solutions to the associated differential Chapman–Kolmogorov equation, based on integral representations of the Dirac delta function, and used this to determine ‘least action’ paths in the noise-induced escape from a metastable state. In this paper we present an alternative derivation of the path integral based on operator methods, and show how this provides a more efficient and flexible framework for constructing hybrid path integrals in the weak noise limit. We also highlight the important role of principal eigenvalues, spectral gaps and the Perron–Frobenius theorem. Finally, we carry out a loop expansion of the associated moment generating functional in the weak noise limit, analogous to the semi-classical limit for quantum path integrals.
Technology basis of digital business-model with land assessment function
Authors: Adadimova L Y , Polulyakh Y G , Brizgalin T V 
Published: March 2021

Abstract
The chief purpose of the investigation was the creation and theoretical foundation of the main features of the technology basis of digital agrarian business-model, which allows to estimate the value of the useable land. Methodological information was theories of constant accounting, technological theories of scientific revolutions, and theories of stages of economic growth. We applied abstract-logical technique of research, modeling methods, formalization procedure and another approaches. The database included tables of annual accounting reports of agricultural organizations and technological maps of crop cultivation. We suggest the term "Technology basis of the digital agrarian business-model," which constitute a combination of three factors of agricultural production, which are closely related. These factors are soil fertility and technological attributes of lands; climate indicators; innovative technologies which use geographic information systems. The most important part of the technology basis of the agrarian business-model is the process maps of crop cultivation, which used as digital twins of real production processes. However, the basis also includes the annual accounting report of agricultural organizations using the software products of the 1C platform after their adaptation. Adaptation of 1C-accounting platform applications means the separation agricultural procedures and production costs between their variable and constant costs (this step is necessary to calculate the efficiency of applied technologies and economic assessment of used land), the creation of a cluster for technological monitoring and forecast of crop yield, as well as the introduction of a managing cluster in application. This last one is capable of evaluating the effectiveness of various innovative products, optimizing the use of available resources, combining the technological module with the geographic information environment. The main function of technology basis is to estimate the value of the used land based on balance between the correlation of natural to artificial fertility of soils and the correlation of constant to variable costs.
Socially responsible investing of agricultural business as an element of sustainable development of agriculture
Authors: Chudinov O O 
Published: March 2021

Abstract
The article is devoted to one of the most modern areas of economy and management: corporate social responsibility and its component part, such as socially responsible investing. In addition, the article reveals the importance of this direction of economic activity for enterprises in the agricultural sector, as well as the need for this work for sustainable business development in modern socio-economic conditions. It is proved that existing and proven technologies of socially responsible investment can be applied in agriculture, allowing it to develop in new directions, but this type of activity is not popular at present, due to low awareness. Recommendations are given on popularization and possible resources for disclosure of information in this area of work and how to apply it in practice.
Model of investment process of complex modernization of machine systems in potato production
Authors: Kulov A R 
Published: March 2021

Abstract
The article deals with the problems and certain economic aspects of forming a model of the investment process of complex modernization of the machine system in potato production. The article analyzes the main factors that prevent the widespread introduction of advanced systems of machines for growing potatoes in various regions of Russia. It is proposed to use, along with measures of state support for direct commodity producers, economic instruments to stimulate the creation of agricultural investment partnerships focused primarily on accumulating and investing capital in the acquisition of advanced technologies and machine systems in agriculture, regardless of the financial and economic state of economic entities, including for small and micro commodity producers.
Development ways of industrial horticulture in Russia in the conditions of the economy digitalization
Authors: Velibekova L A , Dogeev G D , Kaziyev M-R A 
Published: March 2021

Abstract
The paper considers the issues of introduction of digital technology to one of the key sectors of agriculture, horticulture, due to the need for a speedy increase in domestic fruit production, making high-tech jobs, and improving socio-economic development of rural areas. The main directions of digitalization in industrial horticulture are considered, which is defined as the use of automated systems, robotic equipment, remote control of technological processes at all stages of production, as well as the systematization of the data obtained using special programs. The achievements of Russian scientists in creating the “smart garden” system and the advantages of its implementation in industrial gardens are presented. It is noted that the development and implementation of information technologies will increase the efficiency of economic processes and the competitiveness of the industry as a whole.