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1949 1
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2013 31
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626 results

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Page 1
Did you mean uadrant method (13,176,861 results)?
Quadrat method for assessing the population abundance of a commercially managed native soil-nesting bee, Nomia melanderi (Hymenoptera: Halictidae), in proximity to alfalfa seed production in the western United States.
Vinchesi AC, Walsh DB. Vinchesi AC, et al. J Econ Entomol. 2014 Aug;107(4):1695-9. doi: 10.1603/ec13470. J Econ Entomol. 2014. PMID: 25195464 Free article.
The first technique involved quantifying the abundance of emergence holes in 24 0.5-m2 quadrats on the surface of 13 bee beds during the peak period of N. melanderi foraging activity in July of both years. ...We conclude that the nondestructive quadrat method …
The first technique involved quantifying the abundance of emergence holes in 24 0.5-m2 quadrats on the surface of 13 bee beds during …
Klatskin tumours.
Burcharth F. Burcharth F. Acta Chir Scand Suppl. 1988;541:63-9. Acta Chir Scand Suppl. 1988. PMID: 2455407 Review.
Resection of the tumour provides the only chance of cure, but only 25 per cent of the tumours are resectable and only half of these can be resected completely. Resection of the quadrate liver lobe facilitates dissection, and hemihepatectomy is often necessary for a curativ …
Resection of the tumour provides the only chance of cure, but only 25 per cent of the tumours are resectable and only half of these can be r …
A new method for examining the co-occurrence network of fossil assemblages.
Guo S, Ma W, Tang Y, Chen L, Wang Y, Cui Y, Liang J, Li L, Zhuang J, Gu J, Li M, Fang H, Lin X, Shih C, Labandeira CC, Ren D. Guo S, et al. Commun Biol. 2023 Oct 31;6(1):1102. doi: 10.1038/s42003-023-05417-6. Commun Biol. 2023. PMID: 37907587 Free PMC article.
As an important source of data, taphonomic evidence offers the opportunity to provide a broader scope for understanding palaeoecology. However, palaeoecological research methods based on taphonomic evidence are relatively rare, especially for body fossils in lacustrine sed …
As an important source of data, taphonomic evidence offers the opportunity to provide a broader scope for understanding palaeoecology. Howev …
Comparative analysis of time-based and quadrat sampling in seasonal population dynamics of intermediate hosts of human schistosomes.
Perez-Saez J, Mande T, Zongo D, Rinaldo A. Perez-Saez J, et al. PLoS Negl Trop Dis. 2019 Dec 20;13(12):e0007938. doi: 10.1371/journal.pntd.0007938. eCollection 2019 Dec. PLoS Negl Trop Dis. 2019. PMID: 31860653 Free PMC article.
The quadrat protocol yielded on average a relative standard error of 40%, for a mean snail density of 16.7 snails/m2 and index of dispersion of 1.51. ...CONCLUSIONS/SIGNIFICANCE: In addition to the agreement with the time-based method, quadrat sampling provid …
The quadrat protocol yielded on average a relative standard error of 40%, for a mean snail density of 16.7 snails/m2 and index of dis …
Methodology for optimizing quadrat size in sparse vegetation surveys: A desert case study from the Tarim Basin.
Hao L, Qingdong S, Imin B, Kasim N. Hao L, et al. PLoS One. 2020 Aug 26;15(8):e0235469. doi: 10.1371/journal.pone.0235469. eCollection 2020. PLoS One. 2020. PMID: 32845880 Free PMC article.
In this study, we present a methodology for quadrat size optimization based on low-altitude high-precision unmanned aerial vehicle (UAV) images. ...The method exploits UAV technology to rapidly acquire vegetation information and overcomes the shortcomings of traditi …
In this study, we present a methodology for quadrat size optimization based on low-altitude high-precision unmanned aerial vehicle (U …
A novel method for estimating the number of species within a region.
Shtilerman E, Thompson CJ, Stone L, Bode M, Burgman M. Shtilerman E, et al. Proc Biol Sci. 2014 Feb 5;281(1779):20133009. doi: 10.1098/rspb.2013.3009. Print 2014 Mar 22. Proc Biol Sci. 2014. PMID: 24500169 Free PMC article.
In this paper, a novel theory and method for estimating the number of species is developed. The theory involves the use of the Laplace method for approximating asymptotic integrals. ...The method is shown to give accurate results, and in almost all cases foun …
In this paper, a novel theory and method for estimating the number of species is developed. The theory involves the use of the Laplac …
[Characteristics and Source Apportionment of Carbon Components in Road Dust PM(2.5) and PM(10) During Spring in Tianjin Derived by Using the Quadrat Sampling Method].
Ma Y, Ji YQ, Guo JL, Zhao JQ, Li YY, Wang SB, Zhang L. Ma Y, et al. Huan Jing Ke Xue. 2019 Jun 8;40(6):2540-2545. doi: 10.13227/j.hjkx.201811259. Huan Jing Ke Xue. 2019. PMID: 31854644 Chinese.
In order to study the characteristics and sources of carbon fractions in PM(2.5) and PM(10) of road dust in Tianjin, samples of road dust were collected by the quadrat sampling method in April 2015 in Tianjin, and samples were re-suspended on filters by using a NK-Z …
In order to study the characteristics and sources of carbon fractions in PM(2.5) and PM(10) of road dust in Tianjin, samples of road dust we …
[The chi-square method].
HOSEMANN H. HOSEMANN H. Dtsch Med Wochenschr. 1949 Jan 14;74(2):35-7. doi: 10.1055/s-0028-1118263. Dtsch Med Wochenschr. 1949. PMID: 18124257 German. No abstract available.
Longitudinal Study of Changes in Retinal Curvature and its Relationship With Myopia Shift in Chinese Children.
Wu Y, Liu X, Qian W, Yu Y, Wu S, Ni B, Ke B. Wu Y, et al. Invest Ophthalmol Vis Sci. 2025 Jul 1;66(9):37. doi: 10.1167/iovs.66.9.37. Invest Ophthalmol Vis Sci. 2025. PMID: 40657971 Free PMC article.
The central, temporal, nasal, superior, and inferior quadrates were further divided into nine regions and calculated the average curvature for each. ...Regional analysis showed that significant changes in curvature were observed in the myopic shift group particularly in th …
The central, temporal, nasal, superior, and inferior quadrates were further divided into nine regions and calculated the average curv …
[Characteristics and Source Apportionment of Water-soluble Inorganic Ions in Road Dust PM(2.5) During Spring in Tianjin Using the Quadrat Sampling Method].
Zhao JQ, Ji YQ, Zhang L, Wang SB, Li YY. Zhao JQ, et al. Huan Jing Ke Xue. 2018 May 8;39(5):1994-1999. doi: 10.13227/j.hjkx.201710092. Huan Jing Ke Xue. 2018. PMID: 29965497 Chinese.
The concentrations of the major water-soluble inorganic ions were analyzed by ion chromatography. A correlation analysis, ratio method, and principal component analysis were used to analyze the sources of RD PM(2.5). ...
The concentrations of the major water-soluble inorganic ions were analyzed by ion chromatography. A correlation analysis, ratio method …
626 results