scholarly journals Dynamic Assessment of Global Maize Exposure to Extremely High Temperatures

Author(s):  
Yuan Gao ◽  
Peng Su ◽  
Anyu Zhang ◽  
Ran Wang ◽  
Jing’ai Wang

AbstractExposure to extreme heat can severely harm crop growth and development, and it is essential to assess such exposure accurately to minimize risks to crop production. However, the actual distribution of crops and its changes have neither been examined in sufficient detail nor integrated into the assessments of exposure to ensure their accuracy. By examining the distribution of maize at a high resolution through species distribution modeling, we assessed the past and future exposure of maize to temperatures above 37°C worldwide. Such exposure is likely to be widespread and severe, mainly in the subtropics, and may even expand to the mid-latitudes to encompass some major maize-producing areas. Many areas at both high and low latitudes may become exposed for the first time in the next 20 years. By the 2050s, the total area exposed could increase by up to 185% to 308.18 million ha, of which the area exposed for over 60 days may increase nearly sevenfold. The average length of exposure may increase by 69% to 27 days, and areas optimally suited to maize planting may see the fastest increase by up to 772%. Extreme heat can threaten global maize production severely, and measures to mitigate that threat and to adapt to it are urgently needed.

2021 ◽  
Vol 13 (14) ◽  
pp. 20143-20152
Author(s):  
Kanakasabapathi Pradheep ◽  
Soyimchiten ◽  
Ganjalagatta Dasaiah Harish ◽  
Muhammed Abdul Nizar ◽  
Kailash Chandra Bhatt ◽  
...  

In India, lack of revisionary work in the genus Trichosanthes L. (Cucurbitales: Cucurbitaceae) over the past 38 years had resulted in several taxonomic and nomenclatural issues, which had implications in determining actual distribution status of taxa. Based on field observations, collected specimens, data from various specimens in herbaria and critical study of all the resources available, here we confirm the extended distribution of T. anaimalaiensis Bedd. in the states of Manipur and Nagaland; T. cordata Roxb. in Uttar Pradesh and Bihar; T. cucumerina L. subsp. sublobata (Kundu) K. Pradheep, D.R. Pani & K.C. Bhatt in Gujarat, Madhya Pradesh and Odisha; T. dicaelosperma C.B. Clarke in Nagaland; T. kerrii Craib in Arunachal Pradesh and Manipur; T. majuscula (C.B. Clarke) Kundu in Arunachal Pradesh, Sikkim and Assam; and T. truncata C.B. Clarke in Nagaland. Two taxa, namely, Trichosanthes dicaelosperma and T. majuscula, earlier subsumed with T. ovigera Blume or T. cucumeroides (Ser.) Maxim., and T. dunniana H. Lév., respectively, have been resurrected at the rank of species. Lectotypes were designated for the names of above two species. For the first time, female plants of T. majuscula have been described. This communication provides an updated distribution status of seven taxa of Trichosanthes in India along with field and taxonomic notes, and additional taxonomic characters.


Nematology ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 1-21
Author(s):  
Laura Cortada ◽  
Inge Dehennin ◽  
Wim Bert ◽  
Danny Coyne

Summary Within sub-Saharan Africa (SSA), although nematodes are viewed among the most important threats to crop production and food security, the presence of trained nematologists working within this discipline has traditionally been viewed as scarce. The few research studies concerning this subject address this topic from a country or sub-regional perspective and generally portray nematology as ‘insufficient’. Over the past two decades, a few initiatives have been instrumental in building greater nematology expertise. For the first time a structured survey was undertaken, involving interviews with individuals from SSA that were (or currently are) involved in nematology training programmes, research, national extension services or in African universities. This paper provides evidence of the positive impact of various initiatives and shows an increase in the number of available nematology positions, together with high rates of graduates that return home to occupy qualified positions. Our findings will help researchers, policy makers and donors to identify areas requiring support to increase the promotion of nematology in SSA and to make an impact for end-users.


2011 ◽  
Vol 26 (S2) ◽  
pp. 1893-1893
Author(s):  
I. Manor ◽  
G. Yazpan

ADHD is a well-known, chronic disorder that persists in adulthood. During the past 20 years its existence in adults is becoming clearer, yet its dynamic aspects are rarely discussed. The treatment of adults is vital, as much as that of children; however the literature discussing it, especially its non-pharmacological aspect, is scarce.We describe the results of our treatment with drama-therapy of two groups of adults with ADHD. These groups included 11 adults (from both groups), men and women, from most socioeconomic strata, aged ≥ 60 yrs., who were diagnosed as suffering from ADHD and were treated for it for the first time in their life. Drama-therapy was selected as we believed it to be a useful method with associative, distracted ADHD patients, since it enabled the use of transitional space through non-verbal images and acts.This presentation discusses the basic themes with which patients began therapy. Interestingly, all patients, however different, shared the same themes that were built on self doubt and the pre-presumption of disappointment. The impairment related to ADHD, that was felt, but not understood, led to a strong experience of heavy losses, which we tried to define separately: of a clear path, of control, of the inner perception of borders and of the loss of an integrative inner self. All these losses were accumulated in the transitional space in a place we named “Nowhere land”.We would like to present these themes of losses and of becoming lost and to discuss their meaning.


Exchange ◽  
1982 ◽  
Vol 11 (1) ◽  
pp. 48-57

AbstractMons. Antonio Batista Fragoso has been bishop of Crateus in Northeast Brazil for the past ten years. Eighty percent of the 360,000 people in his diocese are impoverished peasants who engage in rudimentary farming. At least half of the peasants are landless. It is among these people that Bishop Fragoso has encouraged the formation of small grassroots Christian communities that are responsible for a profound change in the patterns of Christian living in his diocese. The following is LP's translation of excerpts from a talk that Bishop Fragoso gave to his fellow bishops and priests in Managua in October, 1980. This is the first time it has appeared in English. (Editor Latinamerica Press)


2015 ◽  
Vol 6 (2) ◽  
pp. 109-114 ◽  
Author(s):  
MN Hossain ◽  
M Rokanuzzaman ◽  
MA Rahman ◽  
M Bodiuzzaman ◽  
MA Miah

Over the past few decades deforestation has become the issue of global concern for its rapid reduction of biodiversity. The tropical moist deciduous Sal forest ecosystem of central Bangladesh is currently in a critical situation. Destructive anthropogenic and natural impacts coupled with overexploitation of forest resources have caused severe damage to the forest ecosystem. Due to rubber monoculture, expanding commercial fuel wood plantations & expanding agriculture, illegal cutting, encroachment of forest areas, and illegal poaching of wildlife, the Sal forest is losing biodiversity alarmingly. The study is based on intensive literature survey and tries to explore the overall deforestation situation and conservation practices for Madhupur Sal forest that comprises about 5% of the total forests in Bangladesh. The level of destruction of the natural Sal forest has pushed the forest-dwelling indigenous Garo community into cash crop production, forcing them to move away from their traditional subsistence economy. Now we need to address a joint conservation and improved management plan of the forest resources use. Thus all kinds of military establishments, construction of roads and highways for military purposes should be avoided and a policy of planned industrialization should be adopted to mitigate the adverse effect of industrialization. Findings of the study will help to identify the causes of deforestation and conservation of Madhupur Sal forest and also in other national parks in Bangladesh which ultimately conserve the biodiversity and help to maintain natural balance.DOI: http://dx.doi.org/10.3329/jesnr.v6i2.22105 J. Environ. Sci. & Natural Resources, 6(2): 109-114 2013


2014 ◽  
Vol 28 (3) ◽  
pp. 149-168 ◽  
Author(s):  
David Card ◽  
Stefano DellaVigna

Over the past four decades the median length of the papers published in the “top five” economic journals has grown by nearly 300 percent. We study the effects of a page limit policy introduced by the American Economic Review (AER) in mid-2008 and subsequently adopted by the Journal of the European Economic Association (JEEA) in 2009. We find that the imposition of a 40-page limit on submissions led to no change in the flow of new papers to the AER. Instead, authors responded by shortening and reformatting their papers. For JEEA, in contrast, we conclude that the page-limit policy led authors of longer papers to submit to other journals. These results imply that the AER has substantial monopoly power over submissions, while JEEA faces a very competitive market. Evidence from both journals, and from citations to published papers in the top journals, suggests that longer papers are of higher quality than shorter papers, so the loss of longer submissions at JEEA may have led to a drop in quality. Despite a modest impact of the AER's policy on the average length of submissions, the policy had little or no effect on the length of final accepted manuscripts.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Simon Reich ◽  
Dajie Zhang ◽  
Tomas Kulvicius ◽  
Sven Bölte ◽  
Karin Nielsen-Saines ◽  
...  

AbstractThe past decade has evinced a boom of computer-based approaches to aid movement assessment in early infancy. Increasing interests have been dedicated to develop AI driven approaches to complement the classic Prechtl general movements assessment (GMA). This study proposes a novel machine learning algorithm to detect an age-specific movement pattern, the fidgety movements (FMs), in a prospectively collected sample of typically developing infants. Participants were recorded using a passive, single camera RGB video stream. The dataset of 2800 five-second snippets was annotated by two well-trained and experienced GMA assessors, with excellent inter- and intra-rater reliabilities. Using OpenPose, the infant full pose was recovered from the video stream in the form of a 25-points skeleton. This skeleton was used as input vector for a shallow multilayer neural network (SMNN). An ablation study was performed to justify the network’s architecture and hyperparameters. We show for the first time that the SMNN is sufficient to discriminate fidgety from non-fidgety movements in a sample of age-specific typical movements with a classification accuracy of 88%. The computer-based solutions will complement original GMA to consistently perform accurate and efficient screening and diagnosis that may become universally accessible in daily clinical practice in the future.


Zootaxa ◽  
2021 ◽  
Vol 4996 (3) ◽  
pp. 492-512
Author(s):  
PAN-WEN HSUEH

Two new species and one new record species of the genus Pseudonereis are described from specimens collected from ecological surveys of coasts of Taiwan and an offshore island during the past 15 years: P. jihueiensis n. sp., P. kihawensis n. sp., and P. trimaculata. Epitokes of P. jihueiensis n. sp. and P. trimaculata are also described. Pseudonereis jihueiensis n. sp. can be distinguished from congeners by having edentate jaws, χ-shaped ridge pattern of Areas VI–V–VI, parapodial morphology (i.e., length ratio of dorsal cirrus to dorsal ligule or presence of small pennant-like dorsal ligule, shape of dorsal ligule in certain region of chaetigers), and no heterogomph spinigers in the subacicular fascicle of the neuropodia. Pseudonereis kihawensis n. sp. differs from congeners by having crescent-shaped pointed-bars in Area VI, λ-shaped ridge pattern of Areas VI–V–VI, parapodial morphology (i.e., length ratio of dorsal cirrus to dorsal ligule or presence of small pennant-like dorsal ligule or shape of dorsal ligule in certain region of chaetigers), and no heterogomph spinigers in the subacicular fascicle of the neuropodia. Pseudonereis trimaculata, a species originally described from Indonesia, is reported from Taiwan for the first time. A table of key characters for all species of Pseudonereis is provided.  


Belleten ◽  
2012 ◽  
Vol 76 (276) ◽  
pp. 385-402
Author(s):  
Murat Kılıç

The origins of the imperial cult in Smyrna date back to the Hellenistic period. It is a fact that political concerns were effective in the generation of such cults. Predicting the super power of the future and proving to be a loyal ally whilst acting in satisfactory behaviors were essential factors. The right preference made between two fighting or contending powers ensured that a city would benefit from various privileges in the future. For example, Symrna, which had established a cult in the city previously on behalf of Stratonice, the mother of Antiochus II of Seleucid dynasty, would do the same by building a temple in the name of the dty of Rome for the first time in Asia in 195 BC, after recognizing the rising power. Later on, while giving permission to the provinces that wanted to establish an imperial cult, the Roman emperors and the Senate would consider first, their relationships with Rome in the past and second, their origins. Smyrna, building its relationships with the Roman state on a solid basis, was granted the title of neokoros three times by the Roman Emperors Tiberius, Hadrianus and Caracalla, respectively. In this essay, the development of the Roman imperial cult in Smyrna is discussed within the historical process outlined above. An attempt has been made to put forth new opinions about the issue by discussing the academicians' evaluations on the imperial cult, which apparently was effectively executed in Smyrna between the first and third centuries AD, with the support of epigraphic and numismatic evidences.


2018 ◽  
Vol 19 (5) ◽  
pp. 339-359
Author(s):  
Richard W. Hill ◽  
Daniel Coleman

This co-authored article examines the oldest known treaty between incoming Europeans and Indigenous North Americans to derive five basic principles to guide healthy, productive relationships between Indigenous community-based researchers and university-based ones. Rick Hill, Tuscarora artist and knowledge keeper from the Six Nations of the Grand River, publishes for the first time here the most complete oral history that exists today of that ancient treaty, from the early seventeenth century, known as the Two Row Wampum or the Covenant Chain agreement. Interspersed with Dr. Hill’s reflections, Daniel Coleman, a settler professor of English and Cultural Studies at McMaster University, outlines five principles for research partnerships derived from the discussions of the Two Row Research Partnership seminars that Hill and Coleman have been hosting at Deyohahá:ge: Indigenous Knowledge Centre for the past four years. Formed between the Hodinöhsö:ni’ confederacy and Dutch merchants arriving near Albany, New York in 1609, the Two Row Wampum-Covenant Chain treaty set the precedent for nation-to-nation treaties between European colonial powers and Indigenous peoples with two parallel rows representing the Hodinöhsö:ni’ canoe and the Dutch ship sailing down the shared river. Each party agreed to keep their beliefs and laws in their separate vessels, and on this basis of interdependent autonomy, they established a long-lasting friendship. This article suggests that by renewing our understanding of the Two Row Wampum-Covenant Chain treaty, Indigenous and non-Indigenous researchers alike can rebuild relationships of trust and cooperation that can decolonize Western presumptions and re-establish healthy and productive research partnerships.


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