1,822 results match your criteria crown areas


Evaluation of automated pipelines for tree and plot metric estimation from TLS data in tropical forest areas.

Ann Bot 2021 Apr 20. Epub 2021 Apr 20.

AMAP, Univ. Montpellier, IRD, CNRS, CIRAD, INRAE, Montpellier, France.

Background And Aims: Terrestrial LiDAR scanning (TLS) data are of great interest in forest ecology and management because they provide detailed 3D information on tree structure. Automated pipelines are increasingly used to process TLS data and extract various tree- and plot-level metrics. With these developments comes the risk of unknown reliability due to an absence of systematic output control. Read More

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Host tree traits in pasture areas affect forest and pasture specialist epiphyte species differently.

Am J Bot 2021 Apr 19. Epub 2021 Apr 19.

Laboratório de Ecologia de Fragmentos Florestais, ECOFRAG, Universidade Federal de Alfenas - UNIFAL/MG, Alfenas, MG, Brazil.

Premise: Epiphytes have commensal relationships with their host trees. Besides the influence of tree traits, little has been discussed concerning the ecology of epiphytes in disturbed habitats (e.g. Read More

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First Report of Fusarium oxysporum f. sp. lactucae Race 1 Causing Fusarium Wilt of Lettuce in Norway.

Plant Dis 2021 Apr 14. Epub 2021 Apr 14.

NIBIO, 56624, As, Norway;

Lettuce (Lactuca sativa L.) is produced in Norway both in field and greenhouses. In Norway, greenhouse lettuce is one of the most important vegetables grown year-round. Read More

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Investigating the applicability of UAVs in characterizing desert shrub biomass and developing biological indicators for the selection of suitable revegetation sites.

J Environ Manage 2021 Apr 7;288:112416. Epub 2021 Apr 7.

Natural Environmental Systems and Technologies (NEST) Research Group, Ecolife Sciences Research and Consultation, Kuwait; Environmental Health Dept., College of Health Sciences, The Public Authority for Applied Education and Training, Adailiyah, Kuwait.

This study focused on evaluating factors influencing the growth of perennial shrubs by integrating field-based experiments and spatial analysis using unmanned aerial vehicles (UAVs) to identify ecological indicators that can help detect potential locations for restoration and revegetation of native plants. The experiment was implemented in the Al-Abduli protected area in Kuwait, which is mainly dominated by a Rhanterium epapposum community (desert shrub). Aerial imagery of the study site was acquired using UAVs during the growing season to estimate the desert shrub biomass and carbon stock. Read More

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First report of causing root rot of taro ( ) and leatherleaf fern () in Brazil.

Plant Dis 2021 Apr 5. Epub 2021 Apr 5.

Universidade Federal de Vicosa, Departamento de Fitopatologia, Campus da UFV, Vicosa, Minas Gerais, Brazil, 36571-000;

Colocasia esculenta, taro (T), is a major staple food crop in the tropics, including Brazil. Rumohra adiantiformis, leatherhead fern (LF), is broadly cultivated for its ornamental fronds that are used as a component of flower arrangements. Soft root rot of T and LF, and accompanying rapid plant wilt and death, was observed in plantations in Espírito Santo (Brazil), at Venda Nova do Imigrante, in April 2014 (LF) and July 2015 (T). Read More

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A Model for Dental Age Verification Using Ultrastructural Imaging for Modern and Fossil Representatives of the Rhinocerotidae Family.

Animals (Basel) 2021 Mar 22;11(3). Epub 2021 Mar 22.

Department of Animal Anatomy, Histology and Pathomorphology, Faculty of Veterinary Medicine, National University of Life and Environmental Sciences of Ukraine, Potekhin 16, 03041 Kyiv, Ukraine.

The analyses were performed on a right third premolar (P) of a white rhinoceros female (, Burchell 1817). The specimen was born in captivity at London Zoo (Zoological Society of London), then in the 1970s transferred to Kiev Zoo (Peremohy Avenue), Ukraine, and was kept there until it died at a documented chronological age of 48 years. The female died because of its age, which indicates it was kept in good conditions adequate to the requirements of this species. Read More

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First Report of Strawberry Crown Rot Caused by Xanthomonas fragariae in China.

Plant Dis 2021 Apr 2. Epub 2021 Apr 2.

Shanghai Academy of Agricultural Sciences, Eco-Environmental Protection Research Institute, Shanghai, China;

Strawberry (Fragaria × ananassa Duch.) is a kind of fruit with great economic importance and widely cultivated in the world. From 2019 to 2020, a serious crown rot disease was sporadically observed in several strawberry cultivars including 'Zhang Ji', 'Hong Yan' and 'Yue Xiu' in Shanghai, China. Read More

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The effect of applied salinity and water stress on chemical suppression of from soilborne inoculum in .

Plant Dis 2021 Mar 31. Epub 2021 Mar 31.

University of California, Plant Pathology, One Schields Ave., 354 Hutchison Hall, Davis, California, United States, 95616-8751;

A serious concern for nurseries is the potential for and other species to colonize roots without inducing aboveground symptoms in plants that then serve as cryptic reservoirs of inoculum. Episodic abiotic stresses that reduce plant water potential can compromise host resistance to trigger disease development from root and crown infections in many -plant interactions. We conducted a series of experiments with root-inoculated plants in a potting soil mix to assess influence of excess salt or water deficit on ramorum blight development and the potential for these abiotic stresses to affect efficacy of oomycete-suppressive chemical soil treatments. Read More

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First Report of Crown Rot Caused by Fusarium redolens on Wheat in Kazakhstan.

Plant Dis 2021 Mar 29. Epub 2021 Mar 29.

CIMMYT Turkey, CIMMYT Uluslararası Buğday ve Mısır Geliştirme Merkezi, Şehit Cem Ersever Caddesi No : 9/11, Tarla Bitkileri Araştırma Enstitüsü Kampüsü içi, Ankara, Ankara, Turkey, 06170;

Fusarium crown rot, caused by several species within the genus, is a major constraint that results in significant losses in wheat production worldwide. In June 2019, diseased wheat plants with typical symptoms of crown rot, including discoloration on the first two or three internodes of the stem just above the soil line and stunted, dry rotted, and discolored roots were collected in several bread wheat fields during the maturity stage in Almaty, East Kazakhstan, and Karaganda Regions of Kazakhstan. For each field, approximately twenty tillers were randomly sampled. Read More

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Micro-CT Evaluation of the Marginal and Internal Fit of Crown and Inlay Restorations Fabricated Via Different Digital Scanners belonging to the Same CAD-CAM System.

Int J Prosthodont 2021 Mar 18. Epub 2021 Mar 18.

Purpose: To evaluate the marginal and internal adaptation of all-ceramic crowns and inlays fabricated by different scanners of the same CAD/CAM system.

Materials And Methods: All-ceramic crown preparations were performed on typodont maxillary first premolars, and mandibular first molars were prepared for ceramic Class II mesio-occlusal inlays. Two intraoral scanners (CEREC Bluecam and Omnicam, Dentsply Sirona) and one model scanner (CEREC inEos X5, Dentsply Sirona) were used to scan the preparations. Read More

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The contact area of static and dynamic footprints: Forensic implications.

Sci Justice 2021 Mar 24;61(2):187-192. Epub 2020 Oct 24.

Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, Jodhpur, India.

When found at crime scenes, footprints may be evidentially valuable and can assist with the identity of a perpetrator based on their features and/or measurements. Footprints can be either static (made while standing) or dynamic (made while walking). While extensive research has been performed on the linear measurements obtained from static and dynamic footprints, research on the comparisons between the contact area of static and dynamic footprints in the forensic context are limited. Read More

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Evidence of occurrence of Crown Rust of Barley Caused by Puccinia coronata var. hordei and sexual reproduction of the pathogen under field conditions in China.

Plant Dis 2021 Mar 17. Epub 2021 Mar 17.

College of Plant Protection, P.O. Box 13, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, 712100, P.R.China, Yangling, Shaanxi, China, 712100;

Crown rust of barley, caused by var. (), was first reported by Jin and Steffenson in 1992, and the fungus has been reported only in the United States and Hungary. In China, stripe, stem, and leaf rusts have been reported on barley, but not for crown rust. Read More

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First report of causing stem canker on L. in Oregon.

Authors:
Andrea Garfinkel

Plant Dis 2021 Mar 17. Epub 2021 Mar 17.

Oregon CBD, 3395 S Pacific Hwy W, Independence, Oregon, United States, 97351;

In August of 2020, plants of L. grown in hoop houses at two farms located in Benton County, Oregon exhibited wilting and chlorosis, followed by shoot necrosis. Symptomatic plants had dry, tan-brown lesions or cankers, often accompanied by large, round to irregular or ribbon-shaped, black sclerotia and/or profuse white mycelial growth. Read More

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Indicators of sexual dimorphism in Homo antecessor permanent canines.

J Anthropol Sci 2021 Mar 10;99. Epub 2021 Mar 10.

Centro Nacional de Investigación sobre la Evolución Humana, Paseo de la Sierra de Atapuerca 3, 09002, Burgos, Spain; Anthropology Department, University College of London, 14 Taviton Street, London WC1H 0BW, UK.

One of the main concerns of paleoanthropologists is to make a correct interpretation of the variability observed in the fossil record. However, the current knowledge about sexual dimorphism in the human lineage comes mainly from the study of modern human, Neanderthal and pre-Neanderthal populations, whereas information available about the intrapopulation variability of the groups that preceded these taxa is still ambiguous. In this preliminary study, Homo antecessor dental sample was assessed with the aim of trying to evaluate the degree of variability of their permanent canines` dental tissue proportions. Read More

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Above-ground biomass references for urban trees from terrestrial laser scanning data.

Ann Bot 2021 Mar 10. Epub 2021 Mar 10.

Nategra LLC, Nydeggstalden 30, CH-3011 Bern, Switzerland.

Background And Aims: Within extending urban areas, trees serve a multitude of functions (e.g. carbon storage, suppression of air pollution, mitigation of the 'heat island' effect, oxygen, shade and recreation). Read More

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A new method to estimate branch biomass from terrestrial laser scanning data by bridging tree structure models.

Ann Bot 2021 Mar 7. Epub 2021 Mar 7.

Department of Forest Sciences, University of Helsinki, Latokartanonkaari, Finland.

Background And Aims: Branch biomass and other attributes are important for estimating the carbon budget of forest stands and characterizing crown structure. As destructive measuring is time-consuming and labour-intensive, terrestrial laser scanning (TLS) as a solution has been used to estimate branch biomass quickly and non-destructively. However, branch information extraction from TLS data alone is challenging due to occlusion and other defects, especially for estimating individual branch attributes in coniferous trees. Read More

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Oral health status and treatment needs of children with special health care needs in rural and urban areas of Hyderabad - A cross sectional study.

J Family Med Prim Care 2020 Dec 31;9(12):6158-6163. Epub 2020 Dec 31.

Private Clinical Pediatric Dentist, Tharun Super Speciality Dental Hospital, Hyderabad, Telangana, India.

Aim: The aim of the cross-sectional study was to ascertain the oral health status and treatment needs of special health care need children of age group 3-16 years in rural and urban areas of Hyderabad, Telangana, India.

Materials And Method: To assess and compare the caries status, oral health status, oral hygiene measures, diet and treatment needs in rural and urban population. The data collected was processed and analyzed using the SPSS statistical software program. Read More

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December 2020

A randomized pharmacokinetic-pharmacodynamic evaluation of the potential biosimilar interferon beta-1a product, CinnoVex®.

Expert Opin Biol Ther 2021 Mar 8:1-10. Epub 2021 Mar 8.

CinnaGen Medical Biotechnology Research Center, Alborz University of Medical Sciences, Karaj, Iran.

: The objective of the trial was to evaluate the bioequivalence of the interferon beta-1a (IFN beta-1a) biosimilar product candidate CinnoVex® with the reference product Avonex® by comparing the pharmacokinetics/pharmacodynamics (PK/PD), safety and immunogenicity of the two products in healthy subjects.: A total of 41 healthy subjects were randomized in a two-stage design to receive single doses of CinnoVex® and Avonex®. The primary PK endpoint was the area under the concentration-time curve from time 0 to the last quantifiable concentration (AUC). Read More

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Short communication: In vitro pilot study: Are monolithic 3Y-TZP zirconia crowns too strong for titanium Implants?

Int J Prosthodont 2021 Mar 3. Epub 2021 Mar 3.

Purpose: To report on pilot tests for a planned study on single implant-supported crowns made from different restorative materials using finite element analysis (FEA) and in vitro load-to-failure testing.

Materials And Methods: Within this pilot study, FEA was conducted using Ansys 2019 R2 to simulate stress and deformation for implant-supported crowns made of lithium disilicate ceramic (LiS2) and zirconia (3Y-TZP). Additionally, an in vitro load to failure test was conducted using two specimens per group to evaluate the failure mode and to confirm the findings from the FEA. Read More

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First Report of Fusarium culmorum and Microdochium bolleyi Causing Root Rot on Triticale in Kazakhstan.

Plant Dis 2021 Mar 3. Epub 2021 Mar 3.

CIMMYT Turkey, CIMMYT Uluslararası Buğday ve Mısır Geliştirme Merkezi, Şehit Cem Ersever Caddesi No : 9/11, Tarla Bitkileri Araştırma Enstitüsü Kampüsü içi, Ankara, Ankara, Turkey, 06170;

Triticale (×Triticosecale Wittmack) is obtained from wheat × rye crossing. It is positioned between wheat and rye in terms of resistance to soilborne pathogens including Gaeumannomyces graminis var. tritici, Fusarium culmorum, F. Read More

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Tactile acuity of fingertips and hand representation size in human Area 3b and Area 1 of the primary somatosensory cortex.

Neuroimage 2021 May 27;232:117912. Epub 2021 Feb 27.

Functional Imaging Unit, Center for Diagnostic Radiology, University Medicine of Greifswald, Walther-Rathenau-Str.46, D-17475 Greifswald, Germany. Electronic address:

Intracortical mapping in monkeys revealed a full body map in all four cytoarchitectonic subdivisions of the contralateral primary somatosensory cortex (S1), as well as positive associations between spatio-tactile acuity performance of the fingers and their representation field size especially within cytoarchitectonic Area 3b and Area 1. Previous non-invasive investigations on these associations in humans assumed a monotonous decrease of representation field size from index finger to little finger although the field sizes are known to change in response to training or in disease. Recent developments improved noninvasive functional mapping of S1 by a) adding a cognitive task during repetitive stimulation to decrease habituation to the stimuli, b) smaller voxel size of fMRI-sequences, c) surface-based analysis accounting for cortical curvature, and d) increase of spatial specificity for fMRI data analysis by avoidance of smoothing, partial volume effects, and pial vein signals. Read More

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Resolving phylogeny and polyploid parentage using genus-wide genome-wide sequence data from birch trees.

Mol Phylogenet Evol 2021 Feb 27;160:107126. Epub 2021 Feb 27.

School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK; Royal Botanic Gardens Kew, Richmond, Surrey TW9 3AB, UK. Electronic address:

Numerous plant genera have a history including frequent hybridisation and polyploidisation (allopolyploidisation), which means that their phylogeny is a network of reticulate evolution that cannot be accurately depicted as a bifurcating tree with a single tip per species. The genus Betula, which contains many ecologically important tree species, is a case in point. We generated genome-wide sequence reads for 27 diploid and 36 polyploid Betula species or subspecies using restriction site associated DNA (RAD) sequences. Read More

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February 2021

Identification of fungal species associated with crown and root rots of wheat and evaluation of plant reactions to the pathogens in North Dakota.

Plant Dis 2021 Mar 1. Epub 2021 Mar 1.

North Dakota State University, Plant Pathology, Walster Hall 306, NDSU Dept. 7660, Fargo, North Dakota, United States, 58108-6050;

Common root rot (CRR) and crown rot (CR), caused by Bipolaris sorokiniana and Fusarium species, respectively, can cause significant yield losses in cereal crops. To assess the prevalence, incidence, and severity of these diseases in North Dakota, wheat samples were collected from spring wheat fields across the state in 2012, 2013, and 2014. Based on sub-crown internode symptoms, a greater incidence and severity of CRR was observed in 2012 (warm and dry year) than in 2013 and 2014. Read More

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Dental implant-abutment fracture resistance and wear induced by single-unit screw-retained CAD components fabricated by four CAM methods after mechanical cycling.

J Prosthet Dent 2021 Feb 24. Epub 2021 Feb 24.

Professor, São Leopoldo Mandic Institute and Dental Research Center (SLMANDIC), Campinas, SP, Brazil.

Statement Of Problem: Computer-aided design and computer-aided manufacturing (CAD-CAM) methodologies allow the fabrication of custom dental implant abutments with a variety of materials and techniques. Studies on the mechanical strength of such components and the wear induced at their coupling interface during mechanical cycling are sparse.

Purpose: The purpose of this in vitro study was to measure the wear patterns at the hexagonal platform of dental implants induced by the installation and mechanical cycling of custom abutments fabricated by using 4 different CAD-CAM methods and to determine the compressive static resistance of the implant-abutment combinations. Read More

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February 2021

First report of Armillaria cepistipes causing root disease on Populus trichocarpa (black cottonwood) in Oregon, USA.

Plant Dis 2021 Feb 22. Epub 2021 Feb 22.

Oregon State University, Botany and Plant Pathology, North Dakota State University Departmetn of Plant Pathology 306 Walster Hall, Fargo, North Dakota, United States, 58108-6050;

Populus trichocarpa Torr. and Gray (black cottonwood) is an economically and ecologically important tree species native to western North America. It serves as a model tree species in biology and genetics due to its relatively small genome size, rapid growth, and early reproductive maturity (Jansson and Douglas 2007). Read More

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February 2021

A Multimodal Hair-Loss Treatment Strategy Using a New Topical Phytoactive Formulation: A Report of Five Cases.

Case Rep Dermatol Med 2021 4;2021:6659943. Epub 2021 Feb 4.

Strategic Solutions, Inc., Bozeman, MT, USA.

. Current approved medications for hair loss, such as topical minoxidil and oral finasteride, may have suboptimal efficacy or side effects precluding continued use in some patients. Thus, we report an evaluation of the efficacy, safety, and tolerability of a new topical botanical formulation -GASHEE containing over 12 phytoactive ingredients that affect multiple targets in the cascade of pathophysiologic events that cause hair loss. Read More

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February 2021

Long-Term Clinical Evaluation of Short Implants on Posterior Partially Edentulous Areas: A 14-Year Retrospective Study.

Int J Oral Maxillofac Implants 2021 Jan-Feb;36(1):131-136

Purpose: The clinical long-term outcomes of short implants are controversial. The aim of this study was to perform a long-term evaluation of short implants in posterior partially edentulous areas under various conditions.

Materials And Methods: This retrospective study was conducted with patients who had received 5- to 8-mm short implants to avoid bone grafts and spare anatomical structures between November 2005 and February 2014. Read More

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February 2021

Construction of Covalent Organic Frameworks with Crown Ether Struts.

Angew Chem Int Ed Engl 2021 Feb 18. Epub 2021 Feb 18.

School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China.

Crown ethers are a class of macrocyclic molecules with unique flexible structures but they are rarely integrated in covalent organic frameworks (COFs). To date, employing flexible organic units such as crown ethers to construct COFs with high crystallinity and surface area are still a challenge. In this work, two new COFs with different flexible crown ethers as backbone rather than side chains are synthesized and further employed for alkali metal ions separation. Read More

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February 2021

Occlusal stress distribution and remaining crack propagation of a cracked tooth treated with different materials and designs: 3D finite element analysis.

Dent Mater 2021 Apr 13;37(4):731-740. Epub 2021 Feb 13.

Department of Conservative Dentistry, National Health Insurance Service Ilsan Hospital, 100, Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10444, Republic of Korea. Electronic address:

Objective: Here we used 3D finite element analysis (FEA) to analyze and directly compare stress distribution and crack propagation in identical cracked tooth models after treatment with various materials and designs.

Methods: A 3D model of a cracked tooth was generated. We then applied eight restoration models, comprising combinations of three kinds of restoration designs (inlay, onlay, and crown) and four types of restoration materials (direct composite resin, indirect composite resin, ceramic, and gold). Read More

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Long-term retention of lithium disilicate crowns with a current bioactive cement.

J Esthet Restor Dent 2021 Feb 11. Epub 2021 Feb 11.

Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, Washington, USA.

Objective: To determine if a recent bioactive cement provides acceptable lithium disilicate crown retention after long-term aging with monthly thermocycling.

Materials And Methods: Extracted molars prepared with flat occlusal, 20° taper, ~4 mm axial. Prepared teeth assigned to two groups for equal mean surface areas per group. Read More

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February 2021