Academic literature on the topic 'Texel density'
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Journal articles on the topic "Texel density"
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Cameron, N. D., and C. Smith. "Estimation of carcass leanness in young rams." Animal Science 40, no. 2 (April 1985): 303–8. http://dx.doi.org/10.1017/s0003356100025411.
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ABSTRACTThe accuracy of six methods to estimate carcass leanness in young rams was studied in 36 Texel-Oxford rams, measured at 5 months of age. The rams were slaughtered and dissected. Plasma non-esterified fatty acid and very low density lipoprotein concentrations, sampled before, during and after fasting, showed no relationship with carcass leanness. The same was true for food conversion efficiency measured from 6 to 16 weeks of age, and for measurements taken with the Scanogram ultrasonic machine. The Vetscan and Danscanner ultrasonic machines gave repeatable measurements of fat depth (0·41 and 0·46 respectively). The Vetscan was the best predictor of carcass leanness by proportionally reducing the residual mean square by about 0·20, corresponding to a correlation of −0·45 between ultrasonic fat depth and carcass leanness. Inclusion of average daily gain and ultrasonic fat depth in a selection index would allow appreciable improvements in both traits.
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van Puijenbroek, Marinka E. B., Corjan Nolet, Alma V. de Groot, Juha M. Suomalainen, Michel J. P. M. Riksen, Frank Berendse, and Juul Limpens. "Exploring the contributions of vegetation and dune size to early dune development using unmanned aerial vehicle (UAV) imaging." Biogeosciences 14, no. 23 (December 7, 2017): 5533–49. http://dx.doi.org/10.5194/bg-14-5533-2017.
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Abstract. Dune development along highly dynamic land–sea boundaries is the result of interaction between vegetation and dune size with sedimentation and erosion processes. Disentangling the contribution of vegetation characteristics from that of dune size would improve predictions of nebkha dune development under a changing climate, but has proven difficult due to the scarcity of spatially continuous monitoring data. This study explored the contributions of vegetation and dune size to dune development for locations differing in shelter from the sea. We monitored a natural nebkha dune field of 8 ha, along the coast of the island Texel, the Netherlands, for 1 year using an unmanned aerial vehicle (UAV) with camera. After constructing a digital surface model and orthomosaic we derived for each dune (1) vegetation characteristics (species composition, vegetation density, and maximum vegetation height), (2) dune size (dune volume, area, and maximum height), (3) degree of shelter (proximity to other nebkha dunes and the sheltering by the foredune). Changes in dune volume over summer and winter were related to vegetation, dune size and degree of shelter. We found that a positive change in dune volume (dune growth) was linearly related to initial dune volume over summer but not over winter. Big dunes accumulated more sand than small dunes due to their larger surface area. Exposed dunes increased more in volume (0.81 % per dune per week) than sheltered dunes (0.2 % per dune per week) over summer, while the opposite occurred over winter. Vegetation characteristics did not significantly affect dune growth in summer, but did significantly affect dune growth in winter. Over winter, dunes dominated by Ammophila arenaria, a grass species with high vegetation density throughout the year, increased more in volume than dunes dominated by Elytrigia juncea, a grass species with lower vegetation density (0.43 vs. 0.42 (m3 m−3) week−1). The effect of species was irrespective of dune size or distance to the sea. Our results show that dune growth in summer is mainly determined by dune size, whereas in winter dune growth was determined by vegetation type. In our study area the growth of exposed dunes was likely restricted by storm erosion, whereas growth of sheltered dunes was restricted by sand supply. Our results can be used to improve models predicting coastal dune development.
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Yılmaz, Sercan, Mehmet Yılmaz, Serdar Yalcın, Engin Kaya, Eymen Gazel, Halil Cagrı Aybal, Hakan Özdemir, Mehmet Yorubulut, Ali Yusuf Oner, and Lutfi Tunc. "Basic factors predicting prostate cancer in Prostate Imaging Reporting and Data System-3 lesions." Yeni Üroloji Dergisi 16, no. 16-2 (June 29, 2021): 184–89. http://dx.doi.org/10.33719/yud.2021;16-2-850090.
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Objective: We aimed to investigate the role of the digital rectal examination, PSA density, regional location of the lesion and prostate size in predicting prostate cancer in Prostate Imaging and Data Reporting System (PI-RADS)-3 lesions. Material and Methods: A total of 236 patients with multiparametric MRI performed for clinical suspicion of prostate cancer and reported PI-RADS-3 enrolled between January 2016 and July 2019 in this retrospective study. The datas were extracted from the hospital’s electronic records, patient files and outpatient clinic records. Multiparametric MRI was performed patients to whom have elevated PSA level and/or suspicious digital rectal examination. Patients diagnosed with and without prostate cancer were compared in terms of age, PSA, PSA density, prostate size, pathological results, lesion localization and DRE findings. Results: One hundred thirty- independent predictor seven patients with an initial score of PI-RADS-3 were subjected to further analysis. Prostat cancer detection rate in overall and clinically significant prostate cancer detection rate was 26.2% and 4.3%, respectively. There was a significant difference regarding DRE findings (p=0.001) and PZ location of the lesion (p=0.005) between PCa and no PCa groups. Digital rectal examination (p=0.001) was an independent predictor of prostate cancer in multivariate logistic regression analysis. Conclusion: Digital rectal examination is a practical and important parameter in clarifying the suspicion of prostate cancer in PI-RADS-3 lesions. Keywords: prostatic neoplasms, digital rectal examination, multiparametric magnetic resonance imaging, image guided biopsy
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Encrenaz, T., T. K. Greathouse, S. Aoki, F. Daerden, M. Giuranna, F. Forget, F. Lefèvre, et al. "Ground-based infrared mapping of H2O2 on Mars near opposition." Astronomy & Astrophysics 627 (July 2019): A60. http://dx.doi.org/10.1051/0004-6361/201935300.
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We pursued our ground-based seasonal monitoring of hydrogen peroxide on Mars using thermal imaging spectroscopy, with two observations of the planet near opposition, in May 2016 (solar longitude Ls = 148.5°, diameter = 17 arcsec) and July 2018 (Ls = 209°, diameter = 23 arcsec). Data were recorded in the 1232–1242 cm−1 range (8.1 μm) with the Texas Echelon Cross Echelle Spectrograph (TEXES) mounted at the 3 m Infrared Telescope Facility (IRTF) at the Mauna Kea Observatories. As in the case of our previous analyses, maps of H2O2 were obtained using line depth ratios of weak transitions of H2O2 divided by a weak CO2 line. The H2O2 map of April 2016 shows a strong dichotomy between the northern and southern hemispheres, with a mean volume mixing ratio of 45 ppbv on the north side and less than 10 ppbv on the south side; this dichotomy was expected by the photochemical models developed in the LMD Mars Global Climate Model (LMD-MGCM) and with the recently developed Global Environmental Multiscale (GEM) model. The second measurement (July 2018) was taken in the middle of the MY 34 global dust storm. H2O2 was not detected with a disk-integrated 2σ upper limit of 10 ppbv, while both the LMD-MGCM and the LEM models predicted a value above 20 ppbv (also observed by TEXES in 2003) in the absence of dust storm. This depletion is probably the result of the high dust content in the atmosphere at the time of our observations, which led to a decrease in the water vapor column density, as observed by the PFS during the global dust storm. GCM simulations using the GEM model show that the H2O depletion leads to a drop in H2O2, due to the lack of HO2 radicals. Our result brings a new constraint on the photochemistry of H2O2 in the presence of a high dust content. In parallel, we reprocessed the whole TEXES dataset of H2O2 measurements using the latest version of the GEISA database (GEISA 2015). We recently found that there is a significant difference in the H2O2 line strengths between the 2003 and 2015 versions of GEISA. Therefore, all H2O2 volume mixing ratios up to 2014 from TEXES measurements must be reduced by a factor of 1.75. As a consequence, in four cases (Ls around 80°, 100°, 150°, and 209°) the H2O2 abundances show contradictory values between different Martian years. At Ls = 209° the cause seems to be the increased dust content associated with the global dust storm. The inter-annual variability in the three other cases remains unexplained at this time.
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Tsang, Constantine C. C., John R. Spencer, Emmanuel Lellouch, Miguel A. López-Valverde, Matthew J. Richter, and Thomas K. Greathouse. "Io’s atmosphere: Constraints on sublimation support from density variations on seasonal timescales using NASA IRTF/TEXES observations from 2001 to 2010." Icarus 217, no. 1 (January 2012): 277–96. http://dx.doi.org/10.1016/j.icarus.2011.11.005.
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Heinzmann, Bernd, and Ingrid Chorus. "Restoration Concept for Lake Tegel, A Major Drinking and Bathing Water Resource in a Densely Populated Area." Environmental Science & Technology 28, no. 8 (August 1994): 1410–16. http://dx.doi.org/10.1021/es00057a006.
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Saleh, Teddy Wahyana, Amin Nur, and Ammini A. Saragih. "Rice Leaf Folder (Cnaphalocrosis medinalis) Infestation at Different Planting System and Varieties." Akta Agrosia 23, no. 2 (December 30, 2020): 83–88. http://dx.doi.org/10.31186/aa.23.2.83-88.
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The proliferation of pests is most influenced by the host (plants) and other environments including plant distance and humidity. Agriculture research and development departement has been released many varieties of rice but their resistance to pests and diseases on various developmental areas is different. The study aims to determine the population and attacks intensity of Rice Leaf Folder (Cnaphalocrosis medinalis) on farming rice jajar legowo ganda and regular systems (tegel). The research has been carried out on farmers fields in Buntulia Village, Duhiadaa District, Pohuwato Regency from June to October 2019. The study used a Split plot research design with four replications. The main plot is farming rice jajar legowo ganda and regular system. Sub plots are varieties: 1). Inpari 30, 2). Inpari 31, 3). Inpari 42, and 4). Situbagendit. Cnaphalocrosis Medinalis was observed when the plants age 5, 7, 9, and 11 week after planting (WAP) on 30 clumps per plot. The results showed Cnaphalocrosis medinalis attacking on all varieties in both systems. However, Cnaphalocrosis medinalis attacks on the farming rice jajar legowo ganda (average 7.96 %) has as lower as than regular system (av. 3.95 %)) on the observations per weeks. The intensity of Cnaphalocrosis medinalis attacks on Inpari 31 (av. 5.56 %) as lower as than Situbagendit (av. 13.43 %). The result showed highest populations Cnaphalocrosis medinalis was found on regular system (av. 9.35 h / c) lowest Cnaphalocrosis medinalis populations was on the rice farming jajar legowo ganda (av. 7.96 h / c). Highest populations of Cnaphalocrosis medinalis was found on Situbagendit variety and Inpari 30 variety has lowest populations. Cnaphalocrosis medinalis attack intensity, generally increasing with rice age, the population density was relatively decreased because control doing.Keywords: rice leaf folder, planting system, varieties.
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Pētersons, Andris. "ATTITUDE OF LATVIAN PEOPLE TOWARDS WILDLIFE." SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 7 (May 25, 2018): 208. http://dx.doi.org/10.17770/sie2018vol7.3450.
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The wildlife values orientation and attitude towards wildlife has become a hot topic nowadays in Latvia because the management of preservation and conservation of wildlife must be based on the understanding of the general public. Furthermore Latvia is considered to be one of the more densely forested countries in Europe with 50% of its territory covered with forest.This article examines the wildlife values orientation of different groups of people from six regions of the country towards wildlife. Catherine M. Hill, Amanda D. Webber, Nancy E. C. Priston studies of conflicts in society about wildlife (2017) show that these conflicts rise because of different values between different human groups. Wildlife value orientation framework used in this study is taken from early studies of Fulton, Manfredo and Lipscomb (1996), which was later developed by Teel, Dayer, Manfredo, Bright (2005).According to the data of a nationwide survey conducted by the author all respondents are divided into “utilitarians”, people who consider that wildlife exists for human use and enjoyment; “mutualists”, people who consider humans and wildlife live side by side as parts of one big family, “pluralists” who share both the “utilitarian” and the “mutualist” point of view and take one or the other side in different situations and “distanced”, people who lack well - formed value orientation, indicating very little interest.Respondents were categorized into four wildlife value orientation types based on their responses to 24 statements. The wildlife value orientations among different groups of people were compared according to their age, gender, education, level of income, place of living and place where their childhood was spent. The attitude of people with different wildlife values and general attitude of all people towards hunters was established.
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Baaij, B. Martina, Jeroen Kooijman, Juul Limpens, Richard J. C. Marijnissen, and Jantsje M. van Loon-Steensma. "Monitoring Impact of Salt-Marsh Vegetation Characteristics on Sedimentation: an Outlook for Nature-Based Flood Protection." Wetlands 41, no. 6 (July 1, 2021). http://dx.doi.org/10.1007/s13157-021-01467-w.
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AbstractSalt marshes can protect coastlines against flooding by attenuating wave energy and enhancing shoreline stabilization. However, salt-marsh functioning is threatened by human influences and sea level rise. Although it is known that protection services are mediated by vegetation, little is known about the role of vegetation structure in salt-marsh accretion. We investigated the role of vegetation presence, vegetation type and structural vegetation characteristics in sedimentation and sediment grain size. We established 56 plots on a salt marsh on the Dutch Wadden island of Texel. Plots were divided over four vegetation types contrasting in vegetation structure and varied in elevation and distance to creeks. Vegetation presence was controlled by clipping in subplots. Within each plot, we measured seven vegetation characteristics, sedimentation and the sediment grain size distribution. Furthermore, we explored the effect of the natural variation in vegetation structure on wave attenuation with a simple model approach. For this, we developed vegetation scenarios based on the field measurements of stem height, diameter and density. We found that vegetation presence increased sedimentation on average by 42%. Sedimentation was highest in Salicornia vegetation and increased with stem height and branching level. Grain size also seemed to increase with branching level. Modelled wave attenuation was 7.5 times higher with natural vegetation compared to topography only, was strongest for Spartina vegetation and most sensitive to the natural variance in stem density. Our results can be used to improve predictions of salt-marsh accretion and the implementation of salt marshes in nature-based flood defences.
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Beilis, Dan, Sara Beck, and John Lacy. "Kinematics and structure of Ionized gas in the UCHII regions of W33 main." Monthly Notices of the Royal Astronomical Society, October 29, 2021. http://dx.doi.org/10.1093/mnras/stab3105.
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Abstract High mass proto-stars create Ultra-Compact H ii regions (UCHII) at the stage of evolution when most of the accretion is finished but the star is still heavily embedded in molecular material. The morphologies of UCHII regions reflect the interactions of stellar winds, stellar motions, and density structure in the molecular cloud; they are complex and it has been very difficult to interpret them. We here present data obtained with TEXES on the NASA IRTF of the [Nei,ii] emission line in the proto-cluster of young OB stars in W33 Main. The data cube has a spatial resolution of ∼1.4 arcsec and true velocity resolution ∼5 km s-1; with Aλ ∼ 0.02AV it is relatively unaffected by extinction. We have run 3D hydrodynamic and line profile simulations, using PLUTO and RADMC-3D, of the gas structures created by multiple windy stars moving relative to each other through the ambient cloud. By iterative comparison of the data cube and the simulations, we arrive at models that reproduce the different morphology and kinematic structure of each UCHII region in W33 Main. The results indicate that each sub-source probably holds multiple exciting stars, permitting an improved view of the stellar population, and finds the stellar trajectories, which may determine the dynamical development of the proto-cluster.
Dissertations / Theses on the topic "Texel density"
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Юсеф, Алі. "Інформаційна підтримка створення ієрархічної структури 3D-об’єктів для 3D-сцен." Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/31091.
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Структура та обсяг роботи. Пояснювальна записка дипломного проекту складається з шести розділів, містить 16 рисунків, 10 таблиць, 1 додаток, 27 джерел.
У дипломному проекті реалізована тема «Інформаційна підтримка створення ієрархічної структури 3D-об’єктів для 3D-сцен», метою якої є спрощення інтеграції 3D-асетів в 3D-оточення (сцену) створене в Unreal Engine 4, завдяки категоризації та сортуванню великого обєму 3д асетів, спрощенню процесу імпорту асетів в бібліотеку та спрощенню процесу експорту асетів в ігровий редактор Unreal Engine 4.
Розділ «Загальні положення» описує процес діяльності та можливі варіанти використання даної системи.
В розділі «Інформаційне забезпечення» описана структура вхідних та вихідних даних, наведена структура бази даних.
В розділі «Математична забезпечення» наведено детальний опис математичних алгоритмів, що були використані.
В розділі «Програмне та технічне забезпечення» описані основні програмні засоби, які були використані для розробки даної програми, наведені технічні вимоги до системи, на якій буде запускатись програма, описана програмна архітектура, яка була обрана для розробки.
В технологічному розділі наведено інструкцію користувача та набір тестів, проведених для оцінки якості роботи програми.Structure and extent of the project. The explanatory note of this graduation project consists of six sections, contains 16 drawings, 10 tables, 1 supplement, and 27 sources. For this thesis the theme that was implemented is «Informational Support for Creating a 3D-Object Hierarchical Structure for 3D Environments», the purpose of which is to ease the implementation of 3D Assets in 3D environments created in the Unreal Engine 4, by categorizing and sorting a large number of 3D assets, simplifying the process of importing assets into the library and simplifying the process of exporting assets to the Unreal Engine 4 editor. The general provisions section describes the activities and use cases of the system. In the informational provision section, the input and output data were defined, and the database structure was shown. The mathematical provision section provides a detailed description of the mathematical algorithms that have been used. The software provision section describes the main tools used to develop the program, the technical requirements for the system on which the program will be launched, and the software architecture selected for development. The technical provision section consists of the user manual, and a number of tests conducted to evaluate the quality assurance of the program.
Book chapters on the topic "Texel density"
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"Modeling Three-Dimensional Density Dependent Groundwater Flow at the Island of Texel, The Netherlands." In Coastal Aquifer Management-Monitoring, Modeling, and Case Studies, 89–106. CRC Press, 2003. http://dx.doi.org/10.1201/9780203493496-6.
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Oude Essink, G. "Modeling Three-Dimensional Density Dependent Groundwater Flow at the Island of Texel, The Netherlands." In Coastal Aquifer Management-Monitoring, Modeling, and Case Studies. CRC Press, 2003. http://dx.doi.org/10.1201/9780203493496.ch4.
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