Articles de revues : « DTU »

1

Elbasheir, Haitham A. M., Samia O. Yagoub, Salaheldin A. Mukhtar, Gafar Ali Farah et Nahid Khalil. « Effect of Deficit Irrigation at Different Growth Periods on Yield and Quality of Sugarcane (Saccharum officinarum l.) First Ratoon ». Asian Journal of Research in Crop Science 8, n^o 3 (30 mars 2023) : 62–78. http://dx.doi.org/10.9734/ajrcs/2023/v8i3169.

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Aims: This study aimed to evaluate the effect of deficit irrigation at different growth periods on the yield and quality of sugarcane (Saccharum spp.) first ratoon. Study Design: The study was carried out in Randomized Complete Block Design (RCBD), with three replications. Place and Duration of Study: A field experiment was conducted during two seasons, 2020-21 and 2021-22 at Guneid Sugarcane Research Center Farm, Sudan. Methodology: Irrigation deficit treatments were applied when available soil moisture content (ASMC) reached 25% in the root zone at eight different growth periods viz; DT1: first day to day 50th, DT2: day (5th - 100th), DT3: day (10th -150th), DT4: day (15th - 200th), DT5: day (20th - 250th), DT6: day (25th - 300th), DT7: day (30th - 350th) and DT8: day 35th to day 400th after ratoon establishment. These were compared with optimum irrigation (DT0) which was irrigated at 60% ASMC at the root zone. Results: The results showed that all deficit irrigation treatments (DT1 to DT8) recorded significant cane and sugar yield reduction to the control (DT0) in the two growing seasons. In this sense, DT3, DT4 and DT5 treatments have recorded the highest cane and sugar yield reduction. Moreover, irrigation deficit affected negatively the sugarcane ratoon yield parameters with low cane water productivity in DT4 and DT5 treatments. Therefore, sugarcane first ratoon must be avoided to deficit irrigation at age of 3.3 months to 10.0 months. Conclusion: According to the results sugarcane first ratoon (Variety Co 6806) established in December under the Central Sudan Agro-climatic zone (Gunied conditions) must be avoided to deficit irrigation at ratoon age of 3.3th month to age 10.0th month (at ratoon age 100 days to 300 days), because of high reduction on cane yield and sugar yield and low in water productivity.

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Nurcahyo, Aan Dwi, et Benedictus Raksaka Mahi. « Analisa Dana Transfer Pusat dan Probabilitas Terjadinya Korupsi di Tingkat Pemerintah Daerah ». Integritas : Jurnal Antikorupsi 8, n^o 1 (25 juin 2022) : 95–102. http://dx.doi.org/10.32697/integritas.v8i1.862.

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Perkara korupsi pemerintah daerah di Indonesia menunjukkan tren peningkatan. Mayoritas korupsi dilakukan terhadap dana APBD, dimana sumber penerimaan APBD yang paling utama berasal dari transfer pemerintah pusat. Berdasarkan karakteristik penggunaannya, dana transfer dapat diklasifikasikan menjadi Dana Transfer Umum (DTU, yang terdiri dari DAU & DBH) dan Dana Transfer Khusus (DTK, yang terdiri dari DAK Fisik dan non Fisik). Penelitian ini dilakukan untuk melihat bagaimana pengaruh DTU dan DTK terhadap probabilitas terjadinya korupsi di daerah. Metode yang digunakan adalah regresi Zero-Inflated Poisson (ZIP). Dengan sampel 519 Pemda Kabupaten dan Kota di Indonesia pada periode 2010-2019, DTU ditemukan memiliki hubungan positif terhadap tingkat korupsi di daerah. Keleluasaan dalam mengelola anggaran DTU menjadi penyebab yang memicu peningkatan korupsi di daerah. Sedangkan DTK menunjukkan hubungan negatif dengan tingkat korupsi di daerah. Pemda tidak memiliki keleluasaan untuk menggunakan anggaran DTK untuk program lain, selain itu pengawasan dalam realisasi program DTK juga relatif lebih ketat.

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Zhi, Jinhu, Taoyu Qiu, Xinlu Bai, Mengjie Xia, Zhujun Chen et Jianbin Zhou. « Effects of Nitrogen Conservation Measures on the Nitrogen Uptake by Cotton Plants and Nitrogen Residual in Soil Profile in Extremely Arid Areas of Xinjiang, China ». Processes 10, n^o 2 (11 février 2022) : 353. http://dx.doi.org/10.3390/pr10020353.

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This study researched the effects of using various nitrogen (N) conservation measures on the residual characteristics of nitrate and ammonium N in soil and the associated N uptake by cotton plants. A field experiment with six treatments was conducted, as follows, no N application (DT1), conventional N application (DT2), 60% conventional N application combined with DCD (DT3), 60% conventional N application combined with NBPT (DT4), 60% conventional N application combined with cotton straw returning (DT5), and 60% conventional N application combined with DCD, NBPT, and cotton straw returning (DT6). The results showed that the cotton straws in the DT5 treatment were beneficial for the vegetative growth of cotton seedlings. However, it was observed that the later performance of the plants in this sample was poor in terms of height, biomass, and yield of cotton. The plant height in the DT6 sample increased by 15 cm compared with those in DT1, and the soil and plant analyzer development (SPAD) values of the fourth leaf from the top of the DT6 plants were higher than those in the DT1 and DT4 samples. The DT6 plants (60% Urea + DCD + NBPT + cotton straw) increased N use efficiency by up to 47%, and no significant decrease in biomass and cotton yield was observed compared to the DT2 sample. The residual content of nitrate N in the tillage layer increased gradually over time between two rounds of drip irrigation treatment applications. Compared with the DT2 treatment, the other treatments resulted in lower residual nitrate N contents. In summary, the application of N fertilizers at a reduced rate combined with N conservation measures may increase N use efficiency and decrease the risk of non-point source N fertilizer pollution, while maintaining the cotton yield.

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Zhang, Xuecen, Yi Tang, Qiang Liu, Guofeng Liu, Xin Ning et Jiankun Chen. « A Fault Analysis Method Based on Association Rule Mining for Distribution Terminal Unit ». Applied Sciences 11, n^o 11 (4 juin 2021) : 5221. http://dx.doi.org/10.3390/app11115221.

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With the development of distribution networks, large amounts of distribution terminal units (DTU) are gradually integrated into the power system. However, limited numbers of maintenance engineers can hardly cope with the pressure brought about by the substantial increase of DTU devices. As DTU fault would pose a threat to the stable and safe operation of power systems; thus, it is rather significant to reduce the fault incidence of DTU devices and improve the efficiency of fault elimination. In this paper, a DTU fault analysis method using an association rule mining algorithm was proposed. Key factors of DTU fault were analyzed at first. Then, the main concept of the Eclat algorithm was illustrated, and its performance was compared with FP-growth and Apriori algorithms using DTU fault databases of different sizes. Afterwards, a DTU fault analysis method based on the Eclat algorithm was proposed. The practicality of this method was proven by experiment using a realistic DTU fault database. Finally, the application of this method was presented to demonstrate its effectiveness.

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Dick, Fiona, Gonzalo S. Nido, Guido Werner Alves, Ole-Bjørn Tysnes, Gry Hilde Nilsen, Christian Dölle et Charalampos Tzoulis. « Differential transcript usage in the Parkinson’s disease brain ». PLOS Genetics 16, n^o 11 (2 novembre 2020) : e1009182. http://dx.doi.org/10.1371/journal.pgen.1009182.

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Studies of differential gene expression have identified several molecular signatures and pathways associated with Parkinson’s disease (PD). The role of isoform switches and differential transcript usage (DTU) remains, however, unexplored. Here, we report the first genome-wide study of DTU in PD. We performed RNA sequencing following ribosomal RNA depletion in prefrontal cortex samples of 49 individuals from two independent case-control cohorts. DTU was assessed using two transcript-count based approaches, implemented in the DRIMSeq and DEXSeq tools. Multiple PD-associated DTU events were detected in each cohort, of which 23 DTU events in 19 genes replicated across both patient cohorts. For several of these, including THEM5, SLC16A1 and BCHE, DTU was predicted to have substantial functional consequences, such as altered subcellular localization or switching to non-protein coding isoforms. Furthermore, genes with PD-associated DTU were enriched in functional pathways previously linked to PD, including reactive oxygen species generation and protein homeostasis. Importantly, the vast majority of genes exhibiting DTU were not differentially expressed at the gene-level and were therefore not identified by conventional differential gene expression analysis. Our findings provide the first insight into the DTU landscape of PD and identify novel disease-associated genes. Moreover, we show that DTU may have important functional consequences in the PD brain, since it is predicted to alter the functional composition of the proteome. Based on these results, we propose that DTU analysis is an essential complement to differential gene expression studies in order to provide a more accurate and complete picture of disease-associated transcriptomic alterations.

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Voulund, Rikke Straarup. « GO Findit ! » Revy 45, n^o 4 (15 décembre 2021) : 10–12. http://dx.doi.org/10.22439/revy.v45i4.6440.

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Froussios, Kimon, Kira Mourão, Gordon Simpson, Geoff Barton et Nicholas Schurch. « Relative Abundance of Transcripts (RATs) : Identifying differential isoform abundance from RNA-seq ». F1000Research 8 (24 février 2019) : 213. http://dx.doi.org/10.12688/f1000research.17916.1.

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The biological importance of changes in RNA expression is reflected by the wide variety of tools available to characterise these changes from RNA-seq data. Several tools exist for detecting differential transcript isoform usage (DTU) from aligned or assembled RNA-seq data, but few exist for DTU detection from alignment-free RNA-seq quantifications. We present the RATs, an R package that identifies DTU transcriptome-wide directly from transcript abundance estimates. RATs is unique in applying bootstrapping to estimate the reliability of detected DTU events and shows good performance at all replication levels (median false positive fraction < 0.05). We compare RATs to two existing DTU tools, DRIM-Seq & SUPPA2, using two publicly available simulated RNA-seq datasets and a published human RNA-seq dataset, in which 248 genes have been previously identified as displaying significant DTU. RATs with default threshold values on the simulated Human data has a sensitivity of 0.55, a Matthews correlation coefficient of 0.71 and a false discovery rate (FDR) of 0.04, outperforming both other tools. Applying the same thresholds for SUPPA2 results in a higher sensitivity (0.61) but poorer FDR performance (0.33). RATs and DRIM-seq use different methods for measuring DTU effect-sizes complicating the comparison of results between these tools, however, for a likelihood-ratio threshold of 30, DRIM-Seq has similar FDR performance to RATs (0.06), but worse sensitivity (0.47). These differences persist for the simulated drosophila dataset. On the published human RNA-seq dataset the greatest agreement between the tools tested is 53%, observed between RATs and SUPPA2. The bootstrapping quality filter in RATs is responsible for removing the majority of DTU events called by SUPPA2 that are not reported by RATs. All methods, including the previously published qRT-PCR of three of the 248 detected DTU events, were found to be sensitive to annotation differences between Ensembl v60 and v87.

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Yakubu, N., M. C. Isah et A. I. Musa. « Nutritional Composition and Growth Performance of Fish Meal Supplemented with Sesame indicum (Beni Seed) in the Diets of Clarias gariepinus ». Journal of Applied Sciences and Environmental Management 24, n^o 5 (23 juin 2020) : 741–48. http://dx.doi.org/10.4314/jasem.v24i5.2.

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This study analyzed the chemical compositions, growth performance and nutrient efficiency of fish meal supplemented with varying percentage of S. indicum). A total of 150 of C. gariepinus fingerlings were grouped into 6 tanks with 20 C. gariepinus per tank. Each tank of fish was served with prepared fish meals supplemented with various levels of beniseed (S. indicum), namely, DT1 (commercial diet), stand as the control group, DT2 (0% beniseed with 100% soya bean meal, DT3 (25% beniseed with 75% soya bean meal, DT4 (50% beniseed with 50% soya bean, DT5 (75% beniseed with 25% soya bean and DT6 (100% beniseed with 0% soya bean, individually. Chemical compositions of each experimental diet and fish carcass were determined and the feed utilization by fishes was equally monitored and calculated. Higher levels of moisture content (7.42%), crude fiber (4.24%), total ash (3.16%), crude protein and fat (29.21 and 30.01%) and carbohydrate (27.21%) were established for the dietary group (DT6) as compared to other dietary groups. In contrast, the fish carcass moisture, crude fiber, and total ash contents were high in fish fed DT4 and DT2 compared to others. Elevated calcium (760.7 and 763.6 mg/100g), phosphorus (683.4 and 685.1 mg/100g), sodium (302.4 and 303.4 mg/100g), potassium (820.6 and 825 mg/100g) and iron (32.67 and 37.31 mg/100g) contents were noted in DT5 and DT6 than the other diets. The fish carcass fed DT6 were richer in calcium (803 mg/100g), phosphorus (5023 mg/100g), sodium (492 mg/100g), potassium (6313 mg/100g) and iron (5.12 mg/100g) than the others. C. gariepinus fed DT6 recorded high weight gains (45.64 mg) while fish DT4 had a value of length gain (1.80 cm). Higher significant values were observed for SGR (54.33%), PER (2.47%), FI (2.85%) and SR (80.23%) as feed utilization in fish fed DT6. However, experimental diets (DT5 and DT6) with 75 and 100% S. indicum inclusion look promising and would enhance adequate growth performance and nutrient utilization of C. gariepinus, which may be used for the development of the product in various food industries. Keywords: C. gariepinus, fish meal, feed efficiency, growth performance, S. indicum.

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Ndatsu, Y., M. C. Isah et A. I. Musa. « Effects of supplementing fish meal with Sesame indicum on functional properties, phytotoxins and hematological compositions of Clarias gariepinus ». Journal of Applied Sciences and Environmental Management 24, n^o 10 (3 novembre 2020) : 1723–29. http://dx.doi.org/10.4314/jasem.v24i10.4.

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This study analyzed the effects of supplementing fish meal with Sesame indicum on functional properties, phytotoxins and hematological compositions of Clarias gariepinus. A total of 150 of C. gariepinus fingerlings were grouped into 6 tanks with 20 C. gariepinus per tank. Each tank of fish was served with prepared fish meals supplemented with various levels of beniseed (S. indicum), namely, DT1 (commercial diet), stands as the control group, DT2 (0% beniseed with 100% soya bean meal, DT3 (25% beniseed with 75% soya bean meal, DT4 (50% beniseed with 50% soya bean, DT5 (75% beniseed with 25% soya bean and DT6 (100% beniseed with 0% soya bean, individually. The functional properties of each diet and hematological indices of the treated fish were determined. All prepared diets have improved the functional properties and their phytotoxins level remains within the permissible limit as compared to control diets (DT1). The formulated diets have potentially influenced the hematological indices analyzed compared to the control diet (DT1). At any level of S. indicum inclusion in the fish meal of C. gariepinus there was a potential improvement of the functional properties, hematological parameters and maintaining the levels of phytotoxins not to rise above the permissible limit. Thus, experimental diets (DT5 and DT6) with 75 and 100% S. indicum would be promising candidates which may be used for the development of the product in various food industries. Keywords: Clarias gariepinus, fish meal, hematological indices, Sesame. indicum

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Larsen, B. S. « The European Credit Transfer System (ECTS) : introduction and practical experience at the Technical University of Denmark ». Water Science and Technology 41, n^o 2 (1 janvier 2000) : 61–66. http://dx.doi.org/10.2166/wst.2000.0044.

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The objectives and the core elements of the European Course Credit Transfer System (ECTS) are briefly described. ECTS is a tool to manage student mobility as it facilitates transparency, academic recognition, and commitment of the student and involved institutions. The impact on student mobility and teaching after implementation of ECTS at the Technical University of Denmark (DTU) is reported. The ratio of guest students attending advanced environmental engineering courses at DTU increased from 7 percent of class to almost 50 percent over a three-year period. The number of DTU students studying abroad was also affected by the implementation of ECTS in combination with DTU's additional internationalisation activities. In 1998 DTU achieved balance between the inflow and outflow of students.

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Xu, Guanqun, Wei Yu et Taeseong Kim. « Wind turbine load estimation using machine learning and transfer learning ». Journal of Physics : Conference Series 2265, n^o 3 (1 mai 2022) : 032108. http://dx.doi.org/10.1088/1742-6596/2265/3/032108.

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Abstract Machine learning method has always been popular to solve wind turbine related problems at a data level. However, with the limitation of the availability of relevant data, transfer learning has gained increasing attention. In this study, traditional machine learning method of artificial neural networks (ANN), together with parameter-based transfer learning method has been used to estimate wind turbine load. First, ANN load model was built for DTU 10MW wind turbine as well as NREL 5MW wind turbine. Then, parameter-based transfer learning has been applied to the above-mentioned models to estimate load for a different turbine type or two mixed turbine types. Results indicate that ANN method provides good estimation on wind turbine fatigue load. For DTU 10MW ANN model, the trend of accuracy becomes steady as the number of input samples increases and 1500 samples is deemed as the optimal number of samples for training DTU 10MW. In addition, with transfer learning, it was succeeded in building NREL 5MW model with corresponding DTU 10MW pretrained model but failed in establishing mixed dataset model neither with DTU 10MW nor with NREL 5MW pretrained model.

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Love, Michael I., Charlotte Soneson et Rob Patro. « Swimming downstream : statistical analysis of differential transcript usage following Salmon quantification ». F1000Research 7 (27 juin 2018) : 952. http://dx.doi.org/10.12688/f1000research.15398.1.

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Detection of differential transcript usage (DTU) from RNA-seq data is an important bioinformatic analysis that complements differential gene expression analysis. Here we present a simple workflow using a set of existing R/Bioconductor packages for analysis of DTU. We show how these packages can be used downstream of RNA-seq quantification using the Salmon software package. The entire pipeline is fast, benefiting from inference steps by Salmon to quantify expression at the transcript level. The workflow includes live, runnable code chunks for analysis using DRIMSeq and DEXSeq, as well as for performing two-stage testing of DTU using the stageR package, a statistical framework to screen at the gene level and then confirm which transcripts within the significant genes show evidence of DTU. We evaluate these packages and other related packages on a simulated dataset with parameters estimated from real data.

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Love, Michael I., Charlotte Soneson et Rob Patro. « Swimming downstream : statistical analysis of differential transcript usage following Salmon quantification ». F1000Research 7 (14 septembre 2018) : 952. http://dx.doi.org/10.12688/f1000research.15398.2.

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Detection of differential transcript usage (DTU) from RNA-seq data is an important bioinformatic analysis that complements differential gene expression analysis. Here we present a simple workflow using a set of existing R/Bioconductor packages for analysis of DTU. We show how these packages can be used downstream of RNA-seq quantification using the Salmon software package. The entire pipeline is fast, benefiting from inference steps by Salmon to quantify expression at the transcript level. The workflow includes live, runnable code chunks for analysis using DRIMSeq and DEXSeq, as well as for performing two-stage testing of DTU using the stageR package, a statistical framework to screen at the gene level and then confirm which transcripts within the significant genes show evidence of DTU. We evaluate these packages and other related packages on a simulated dataset with parameters estimated from real data.

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Love, Michael I., Charlotte Soneson et Rob Patro. « Swimming downstream : statistical analysis of differential transcript usage following Salmon quantification ». F1000Research 7 (1 octobre 2018) : 952. http://dx.doi.org/10.12688/f1000research.15398.3.

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Detection of differential transcript usage (DTU) from RNA-seq data is an important bioinformatic analysis that complements differential gene expression analysis. Here we present a simple workflow using a set of existing R/Bioconductor packages for analysis of DTU. We show how these packages can be used downstream of RNA-seq quantification using the Salmon software package. The entire pipeline is fast, benefiting from inference steps by Salmon to quantify expression at the transcript level. The workflow includes live, runnable code chunks for analysis using DRIMSeq and DEXSeq, as well as for performing two-stage testing of DTU using the stageR package, a statistical framework to screen at the gene level and then confirm which transcripts within the significant genes show evidence of DTU. We evaluate these packages and other related packages on a simulated dataset with parameters estimated from real data.

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Hagen, Anke, et Henrik Lund Frandsen. « Solid Oxide Development Status at DTU Energy ». ECS Transactions 91, n^o 1 (10 juillet 2019) : 235–45. http://dx.doi.org/10.1149/09101.0235ecst.

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Zhang, Guoming, Xiaoyu Ji, Yanjie Li et Wenyuan Xu. « Power-Based Non-Intrusive Condition Monitoring for Terminal Device in Smart Grid ». Sensors 20, n^o 13 (28 juin 2020) : 3635. http://dx.doi.org/10.3390/s20133635.

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As a critical component in the smart grid, the Distribution Terminal Unit (DTU) dynamically adjusts the running status of the entire smart grid based on the collected electrical parameters to ensure the safe and stable operation of the smart grid. However, as a real-time embedded device, DTU has not only resource constraints but also specific requirements on real-time performance, thus, the traditional anomaly detection method cannot be deployed. To detect the tamper of the program running on DTU, we proposed a power-based non-intrusive condition monitoring method that collects and analyzes the power consumption of DTU using power sensors and machine learning (ML) techniques, the feasibility of this approach is that the power consumption is closely related to the executing code in CPUs, that is when the execution code is tampered with, the power consumption changes accordingly. To validate this idea, we set up a testbed based on DTU and simulated four types of imperceptible attacks that change the code running in ARM and DSP processors, respectively. We generate representative features and select lightweight ML algorithms to detect these attacks. We finally implemented the detection system on the windows and ubuntu platform and validated its effectiveness. The results show that the detection accuracy is up to 99.98% in a non-intrusive and lightweight way.

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Majeau, Alicia, Laura Murphy, Claudia Herrera et Eric Dumonteil. « Assessing Trypanosoma cruzi Parasite Diversity through Comparative Genomics : Implications for Disease Epidemiology and Diagnostics ». Pathogens 10, n^o 2 (16 février 2021) : 212. http://dx.doi.org/10.3390/pathogens10020212.

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Chagas disease is an important vector-borne neglected tropical disease that causes great health and economic losses. The etiological agent, Trypanosoma cruzi, is a protozoan parasite endemic to the Americas, comprised by important diversity, which has been suggested to contribute to poor serological diagnostic performance. Current nomenclature describes seven discrete typing units (DTUs), or lineages. We performed the first large scale analysis of T. cruzi diversity among 52 previously published genomes from strains covering multiple countries and parasite DTUs and assessed how different markers summarize this genetic diversity. We also examined how seven antigens currently used in commercial serologic tests are conserved across this diversity of strains. DTU structuration was confirmed at the whole-genome level, with evidence of sub-DTU diversity, associated in part to geographic structuring. We observed very comparable phylogenetic tree topographies for most of the 32 markers investigated, with clear clustering of sequences by DTU, and a few of these markers suggested some degree of intra-lineage diversity. At least three of the currently used antigens represent poorly conserved sequences, with sequences used in tests quite divergent from sequences in many strains. Most markers are well suited for estimating parasite diversity to DTU level, and a few are particularly well-suited to assess intra-DTU diversity. Analysis of antigen sequences across all strains indicates that antigenic diversity is a likely explanation for limited diagnostic performance in Central and North America.

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Villalobos, Guiehdani, Claudia I. Muñoz-García, Roberto Rodríguez-Cabo-Mercado, Nancy Mendoza-Bazán, Adrián Hernández-Ortiz, Claudia Villanueva-García, Fernando Martínez-Hernández et Emilio Rendón-Franco. « Prevalence and Epitope Recognition of Anti-Trypanosoma cruzi Antibodies in Two Procyonid Species : Implications for Host Resistance ». Pathogens 9, n^o 6 (12 juin 2020) : 464. http://dx.doi.org/10.3390/pathogens9060464.

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More than 180 mammalian species have been found naturally infected with Trypanosoma cruzi. Many of them play an important role in the maintenance of this parasite. In particular, new studies have appeared which indicate that some species of Procyonidae family may play a role as T. cruzi hosts, however, more data are needed to evaluate their long-term physiological response to parasite infection, especially for specific antibodies. In this study, antibodies to T. cruzi were detected and prevalence and epitope recognition were assessed by ELISA (using discrete typing unit (DTU) I as antigen) and WB (using DTU I and DTU II as antigens) and sera from two procyonid species obtained through five-year follow-up of two semicaptive populations living in the same habitat. Marked heterogeneity in antigens recognition between species and differences in seroprevalence (p = 0.0002) between white-nosed coatis (Nasua narica), 51.8% (115/222), and common raccoons (Procyon lotor), 28.3% (23/81), were found. Antigens with high molecular weight when DTU-I was used were the most recognized, while a greater antigen diversity recognition was observed with DTU-II; for white-nosed coatis, low-molecular-weight antigens were mainly recognized, while for common raccoons proteins with molecular weights greater than 80 kDa were recognized most. These divergent humoral immune responses could be related to an alleged pattern of recognition receptors and major histocompatibility complex molecules difference in the procyonids species.

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Cmero, Marek, Nadia M. Davidson et Alicia Oshlack. « Fast and accurate differential transcript usage by testing equivalence class counts ». F1000Research 8 (7 mars 2019) : 265. http://dx.doi.org/10.12688/f1000research.18276.1.

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Background: RNA sequencing has enabled high-throughput and fine-grained quantitative analyses of the transcriptome. While differential gene expression is the most widely used application of this technology, RNA-seq data also has the resolution to infer differential transcript usage (DTU), which can elucidate the role of different transcript isoforms between experimental conditions, cell types or tissues. DTU has typically been inferred from exon-count data, which has issues with assigning reads unambiguously to counting bins, and requires alignment of reads to the genome. Recently, approaches have emerged that use transcript quantifications estimates directly for DTU. Transcript counts can be inferred from 'pseudo' or lightweight aligners, which are significantly faster than traditional genome alignment. However, recent evaluations show lower sensitivity in DTU analysis. Transcript abundances are estimated from equivalence classes (ECs), which determine the transcripts that any given read is compatible with. Recent work has proposed performing differential expression testing directly on equivalence class read counts (ECs). Methods: Here we demonstrate that ECs can be used effectively with existing count-based methods for detecting DTU. We evaluate this approach on simulated human and drosophila data, as well as on a real dataset through subset testing. Results: We find that ECs counts have similar sensitivity and false discovery rates as exon-level counts but can be generated in a fraction of the time through the use of pseudo-aligners. Conclusions: We posit that equivalence class read counts are a natural unit on which to perform many types of analysis.

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Cmero, Marek, Nadia M. Davidson et Alicia Oshlack. « Using equivalence class counts for fast and accurate testing of differential transcript usage ». F1000Research 8 (29 avril 2019) : 265. http://dx.doi.org/10.12688/f1000research.18276.2.

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Background: RNA sequencing has enabled high-throughput and fine-grained quantitative analyses of the transcriptome. While differential gene expression is the most widely used application of this technology, RNA-seq data also has the resolution to infer differential transcript usage (DTU), which can elucidate the role of different transcript isoforms between experimental conditions, cell types or tissues. DTU has typically been inferred from exon-count data, which has issues with assigning reads unambiguously to counting bins, and requires alignment of reads to the genome. Recently, approaches have emerged that use transcript quantification estimates directly for DTU. Transcript counts can be inferred from 'pseudo' or lightweight aligners, which are significantly faster than traditional genome alignment. However, recent evaluations show lower sensitivity in DTU analysis compared to exon-level analysis. Transcript abundances are estimated from equivalence classes (ECs), which determine the transcripts that any given read is compatible with. Recent work has proposed performing a variety of RNA-seq analysis directly on equivalence class counts (ECCs). Methods: Here we demonstrate that ECCs can be used effectively with existing count-based methods for detecting DTU. We evaluate this approach on simulated human and drosophila data, as well as on a real dataset through subset testing. Results: We find that ECCs have similar sensitivity and false discovery rates as exon-level counts but can be generated in a fraction of the time through the use of pseudo-aligners. Conclusions: We posit that equivalence class read counts are a natural unit on which to perform differential transcript usage analysis.

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Acosta, Nidia, Jorge Miret, Elsa López et Alicia Schinini. « First report of Sapajus cay naturally infected by Trypanosoma cruzi in San Pedro Department, Paraguay ». Revista Brasileira de Parasitologia Veterinária 25, n^o 3 (29 août 2016) : 327–32. http://dx.doi.org/10.1590/s1984-29612016052.

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Abstract To verify the occurrence of natural Trypanosoma cruzi infection in non-human primates from a rural endemic area of the east region of Paraguay, xenodiagnosis was performed in 35 animals belonging to two species. For genotyping and T. cruzi discrete typing unit (DTU) assignment, a combination of four markers was used, including amplification products of the small (18S) and large (24Sα) subunits of ribosomal ribonucleic acid gene, the intergenic region of mini-exon gene and the heat shock protein 60 Eco-RV polymerase chain reaction-restriction fragment length polymorphism (HSP60/EcoRV-PCR-RFLP). One specimen of Sapajus cay was found positive and infected by the DTU TcII. This result constitutes the first record of natural T. cruzi infection in a sylvatic monkey in Paraguay, harbouring a DTU associated with severe Chagas disease in humans.

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Chen, Jin, Jiang Tao Cheng et Wen Zhong Shen. « Research on Design Methods and Aerodynamics Performance of CQU-DTU-B21 Airfoil ». Advanced Materials Research 455-456 (janvier 2012) : 1486–90. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1486.

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This paper presents the design methods of CQU-DTU-B21 airfoil for wind turbine. Compared with the traditional method of inverse design, the new method is described directly by a compound objective function to balance several conflicting requirements for design wind turbine airfoils, which based on design theory of airfoil profiles, blade element momentum (BEM) theory and airfoil Self-Noise prediction model. And then an optimization model with the target of maximum power performance on a 2D airfoil and low noise emission of design ranges for angle of attack has been developed for designing CQU-DTU-B21 airfoil. To validate the optimization results, the comparison of the aerodynamics performance by XFOIL and wind tunnels test respectively at Re=3×106 is made between the CQU-DTU-B21 and DU93-W-210 which is widely used in wind turbines.

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Marković, Nikola, Per Roos, Sven Poul Nielsen et Xiao Xiao Cai. « Background reduction at DTU Nutech surface gamma laboratory ». Applied Radiation and Isotopes 151 (septembre 2019) : 30–38. http://dx.doi.org/10.1016/j.apradiso.2019.05.014.

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Sales-Campos, Helioswilton, Henrique Borges Kappel, Cristiane Pontes Andrade, Tiago Pereira Lima, Mardén Estevão Mattos, Alessandra de Castilho, Dalmo Correia, Luis Eduardo Ramirez Giraldo et Eliane Lages-Silva. « A DTU-dependent blood parasitism and a DTU-independent tissue parasitism during mixed infection of Trypanosoma cruzi in immunosuppressed mice ». Parasitology Research 113, n^o 1 (1 novembre 2013) : 375–85. http://dx.doi.org/10.1007/s00436-013-3665-z.

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Refn, Annette. « Sommetider hjælper et lille skub ». Revy 44, n^o 1 (31 mars 2021) : 18–19. http://dx.doi.org/10.22439/revy.v44i1.6196.

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Minukhin, Serhii. « PERFORMANCE STUDY OF THE DTU MODEL FOR RELATIONAL DATABASES ON THE AZURE PLATFORM ». Innovative Technologies and Scientific Solutions for Industries, n^o 1 (19) (26 avril 2022) : 27–39. http://dx.doi.org/10.30837/itssi.2022.19.027.

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When solving problems of working with relational databases on cloud platforms, the problem arises of choosing a specific model to ensure the performance of executing queries of varying complexity. The object of research is the processes of implementing various types of queries to relational databases within the framework of the DTU purchase model of the MS Azure platform. The subject is methods for evaluating the performance of work with relational databases based on the timing of query execution and indicators of the load on the resources of the cloud platform. The aim of the study is to develop a system of indicators for monitoring the current state of work with the database for reasonable decision-making on the choice of a certain price category of the DTU model of the MS Azure cloud service, which will optimize the results of working with the database. platforms Achieving the set goals involves the following tasks: to analyze modern tools and services for working with databases, in particular relational databases, on Azure and AWS cloud platforms, the features of their application and implementation; develop software for generating test relational databases of different sizes; test the generated databases on a local resource; taking into account the characteristics of the levels of the Azure DTU model, develop a new system of performance indicators, which includes 2 groups - time indicators and indicators of the load on existing platform resources; develop and implement queries of varying complexity for the generated test database for different levels of the DTU model and analyze the results. Methods. The following methods were used in the research: methods of relational database design; methods of creating queries in SQL-oriented databases with any number of tables; methods of creating and migrating data to cloud platforms; methods of monitoring the results of queries based on time and resource indicators; methods of generating test data for relational databases; system approach for complex assessment and analysis of productivity of work with relational databases. Results. On the basis of the developed scorecard used for the current analysis of the processes of working with relational databases of the MS Azure platform, numerous experiments were carried out for different levels of the model for simple and complex queries to a database with a total volume of 20 GB: loading of DTU model levels when executing various queries, the influence of model levels DTU Azure SQL database on the performance of simple and complex queries, the dependence of the execution time of various queries on the load of the CPU and the speed of write/read operations for different levels of the model. Conclusions. The results of the experiments allow us to conclude that the levels of the DTU model - S3 and S7 - are used to generate test data of various sizes (up to 20 GB) and execute database queries. The practical use of the proposed indicators to evaluate the results of applying the DTU model will improve the efficiency of decision-making on choosing the model level when implementing various queries and generating test data on the Azure cloud platform. The developed set of indicators for working with relational databases on the Azure cloud platform expands the basis of the methodological framework for evaluating the performance of working with relational databases on cloud platforms by analyzing the results of executing the simple and complex database queries on the resources involved.

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Villadsen, Jørgen, Andreas Halkjær From, Salvador Jacobi et Nikolaj Nøkkentved Larsen. « Multi-agent programming contest 2016 - the Python-DTU team ». International Journal of Agent-Oriented Software Engineering 6, n^o 1 (2018) : 86. http://dx.doi.org/10.1504/ijaose.2018.089598.

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Larsen, Nikolaj Nøkkentved, Jørgen Villadsen, Andreas Halkjær From et Salvador Jacobi. « Multi-agent programming contest 2016 - the Python-DTU team ». International Journal of Agent-Oriented Software Engineering 6, n^o 1 (2018) : 86. http://dx.doi.org/10.1504/ijaose.2018.10010604.

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Shen, W. Z., W. J. Zhu, A. Fischer, N. R. Garcia, J. T. Cheng, J. Chen et J. Madsen. « Validation of the CQU-DTU-LN1 series of airfoils ». Journal of Physics : Conference Series 555 (16 décembre 2014) : 012093. http://dx.doi.org/10.1088/1742-6596/555/1/012093.

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Sakshi, S. K. Singh et A. K. Haritash. « Catabolic enzyme activities during biodegradation of three-ring PAHs by novel DTU-1Y and DTU-7P strains isolated from petroleum-contaminated soil ». Archives of Microbiology 203, n^o 6 (2 avril 2021) : 3101–10. http://dx.doi.org/10.1007/s00203-021-02297-4.

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Gilis, Jeroen, Kristoffer Vitting-Seerup, Koen Van den Berge et Lieven Clement. « satuRn : Scalable analysis of differential transcript usage for bulk and single-cell RNA-sequencing applications ». F1000Research 10 (8 août 2022) : 374. http://dx.doi.org/10.12688/f1000research.51749.2.

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Alternative splicing produces multiple functional transcripts from a single gene. Dysregulation of splicing is known to be associated with disease and as a hallmark of cancer. Existing tools for differential transcript usage (DTU) analysis either lack in performance, cannot account for complex experimental designs or do not scale to massive single-cell transcriptome sequencing (scRNA-seq) datasets. We introduce satuRn, a fast and flexible quasi-binomial generalized linear modelling framework that is on par with the best performing DTU methods from the bulk RNA-seq realm, while providing good false discovery rate control, addressing complex experimental designs, and scaling to scRNA-seq applications.

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Gilis, Jeroen, Kristoffer Vitting-Seerup, Koen Van den Berge et Lieven Clement. « satuRn : Scalable analysis of differential transcript usage for bulk and single-cell RNA-sequencing applications ». F1000Research 10 (11 mai 2021) : 374. http://dx.doi.org/10.12688/f1000research.51749.1.

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Alternative splicing produces multiple functional transcripts from a single gene. Dysregulation of splicing is known to be associated with disease and as a hallmark of cancer. Existing tools for differential transcript usage (DTU) analysis either lack in performance, cannot account for complex experimental designs or do not scale to massive scRNA-seq data. We introduce satuRn, a fast and flexible quasi-binomial generalized linear modelling framework that is on par with the best performing DTU methods from the bulk RNA-seq realm, while providing good false discovery rate control, addressing complex experimental designs and scaling to scRNA-seq applications.

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Liu, Xiangbo, Allan Ross Magee, Aziz Merchant, Anis Hussain, Ankit Choudhary, Amit Jain et Bernad A. P. Francis. « A Parametric Study on the Innovative Coupling Arm Connecting the Coupled TAD-TLP ». MATEC Web of Conferences 203 (2018) : 01017. http://dx.doi.org/10.1051/matecconf/201820301017.

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Two body marine systems, like a Tender Assisted Drilling (TAD) vessel coupled with a floating Dry-Tree Unit (DTU), have become very common in offshore operations. One of the unavoidable challenge we have to cope with is the connection between the TAD and DTU should make sure the TAD does not drift away from the platform and also avoid the possible collision in case of a harsher environment. The objective of this study is to understand the hydrodynamic interactions between the two coupled floating bodies and improve the devising of the innovative connection system. In this study, an innovative rigid connection system, the coupling arm is applied to connect the TAD and a DTU, in this case, a Tension Leg Platform (TLP). The whole system is modelled by the commercial software HARP. A comprehensive parametric study on the pretension and the nominal length of the coupling arm is carried out. The hydrodynamic analysis of the coupled TAD-TLP system elucidates the interactions between the two bodies. The chosen combination of the coupling arm pretension and the nominal length will determine the required stroke range and maximum forces needed to design the innovative coupling arm for safe operations.

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Vela, Andrea, Marco Coral-Almeida, Denis Sereno, Jaime A. Costales, Christian Barnabé et Simone Frédérique Brenière. « In vitro susceptibility of Trypanosoma cruzi discrete typing units (DTUs) to benznidazole : A systematic review and meta-analysis ». PLOS Neglected Tropical Diseases 15, n^o 3 (22 mars 2021) : e0009269. http://dx.doi.org/10.1371/journal.pntd.0009269.

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Background Chagas disease, a neglected tropical disease endemic to Latin America caused by the parasite Trypanosoma cruzi, currently affects 6–7 million people and is responsible for 12,500 deaths each year. No vaccine exists at present and the only two drugs currently approved for the treatment (benznidazole and nifurtimox), possess serious limitations, including long treatment regimes, undesirable side effects, and frequent clinical failures. A link between parasite genetic variability and drug sensibility/efficacy has been suggested, but remains unclear. Therefore, we investigated associations between T. cruzi genetic variability and in vitro benznidazole susceptibility via a systematic article review and meta-analysis. Methodology/Principal findings In vitro normalized benznidazole susceptibility indices (LC50 and IC50) for epimastigote, trypomastigote and amastigote stages of different T. cruzi strains were recorded from articles in the scientific literature. A total of 60 articles, which include 189 assays, met the selection criteria for the meta-analysis. Mean values for each discrete typing unit (DTU) were estimated using the meta and metaphor packages through R software, and presented in a rainforest plot. Subsequently, a meta-regression analysis was performed to determine differences between estimated mean values by DTU/parasite stage/drug incubation times. For each parasite stage, some DTU mean values were significantly different, e.g. at 24h of drug incubation, a lower sensitivity to benznidazole of TcI vs. TcII trypomastigotes was noteworthy. Nevertheless, funnel plots detected high heterogeneity of the data within each DTU and even for a single strain. Conclusions/Significance Several limitations of the study prevent assigning DTUs to different in vitro benznidazole sensitivity groups; however, ignoring the parasite’s genetic variability during drug development and evaluation would not be advisable. Our findings highlight the need for establishment of uniform experimental conditions as well as a screening of different DTUs during the optimization of new drug candidates for Chagas disease treatment.

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Nielebock, Marco Antonio Prates, Otacílio C. Moreira, Samanta Cristina das Chagas Xavier, Luciana de Freitas Campos Miranda, Ana Carolina Bastos de Lima, Thayanne Oliveira de Jesus Sales Pereira, Alejandro Marcel Hasslocher-Moreno, Constança Britto, Luiz Henrique Conde Sangenis et Roberto Magalhães Saraiva. « Association between Trypanosoma cruzi DTU TcII and chronic Chagas disease clinical presentation and outcome in an urban cohort in Brazil ». PLOS ONE 15, n^o 12 (2 décembre 2020) : e0243008. http://dx.doi.org/10.1371/journal.pone.0243008.

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Background The specific roles of parasite characteristics and immunological factors of the host in Chagas disease progression and prognosis are still under debate. Trypanosoma cruzi genotype may be an important determinant of the clinical chronic Chagas disease form and prognosis. This study aimed to identify the potential association between T. cruzi genotypes and the clinical presentations of chronic Chagas disease. Methodology/principal findings This is a retrospective study using T. cruzi isolated from blood culture samples of 43 patients with chronic Chagas disease. From 43 patients, 42 were born in Brazil, mainly in Southeast and Northeast Brazilian regions, and one patient was born in Bolivia. Their mean age at the time of blood collection was 52.4±13.2 years. The clinical presentation was as follows 51.1% cardiac form, 25.6% indeterminate form, and 23.3% cardiodigestive form. Discrete typing unit (DTU) was determined by multilocus conventional PCR. TcII (n = 40) and TcVI (n = 2) were the DTUs identified. DTU was unidentifiable in one patient. The average follow-up time after blood culture was 5.7±4.4 years. A total of 14 patients (32.5%) died and one patient underwent heart transplantation. The cause of death was sudden cardiac arrest in six patients, heart failure in five patients, not related to Chagas disease in one patient, and ignored in two patients. A total of 8 patients (18.6%) progressed, all of them within the cardiac or cardiodigestive forms. Conclusions/significance TcII was the main T. cruzi DTU identified in chronic Chagas disease Brazilian patients (92.9%) with either cardiac, indeterminate or cardiodigestive forms, born at Southeast and Northeast regions. Other DTU found in much less frequency was TcVI (4.8%). TcII was also associated to patients that evolved with heart failure or sudden cardiac arrest, the two most common and ominous consequences of the cardiac form of Chagas disease.

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Wang, Wei, Jian Hua Ren et Jian Guo Ren. « The Design and Implementation of GRPS DTU Based on Rabbit3000 ». Advanced Materials Research 267 (juin 2011) : 60–63. http://dx.doi.org/10.4028/www.scientific.net/amr.267.60.

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The design of a new style GPRS DTU with its software and hardware is proposed. The Rabbit Semiconductor industrial Rabbit 3000 is used as control MCU, the latest GPRS of data mobile communication net for dada transmission and the MC39i module is recommended for data reception. And the realization of the software’s hierarchical structure is introduced.

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Zulantay, Inés, Gabriela Muñoz, Daniela Liempi, Tamara Rozas, María José Manneschi, Catalina Muñoz-San Martín, Carezza Botto-Mahan, Werner Apt et Gonzalo Cabrera. « Discrete Typing Units of Trypanosoma cruzi Identified by Real-Time PCR in Peripheral Blood and Dejections of Triatoma infestans Used in Xenodiagnosis Descriptive Study ». Pathogens 11, n^o 7 (12 juillet 2022) : 787. http://dx.doi.org/10.3390/pathogens11070787.

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Chagas disease (ChD) is a vector zoonosis native to the American continent caused by the protozoan parasite Trypanosoma cruzi; the biological vectors are multiple species of hematophagous insects of the family Triatominae. A relevant aspect in the host–parasite relationship is the identification of the various genotypes of T. cruzi called discrete typing units (DTU) that circulate in mammals and vectors. In Chile, it has been described that the DTUs TcI, TcII, TcV, and TcVI circulate in infected humans, vectors, and wild animals. Identifying DTUs has acquired clinical importance, since it has been suggested that different genotypes could cause distinct pathologies, circulate in different geographical areas, and present different sensitivities to trypanocidal drugs. In this study, circulating T. cruzi DTUs in peripheral blood and Triatoma infestans dejections used in xenodiagnosis (XD) were amplified by qPCR in 14 Chilean patients with chronic ChD from highly endemic areas. More positive samples were detected by XD compared to peripheral blood samples, and 64.28% of the cases were simple infections and 35.72% mixed, with a statistically significant difference in the frequency of TcV DTU. This study would suggest that T. infestans from Chile is more competent to amplify one DTU over others, probably due to a process of co-evolution.

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Bogias, Konstantinos J., Stephen M. Pederson, Shalem Leemaqz, Melanie D. Smith, Dale McAninch, Tanja Jankovic-Karasoulos, Dylan McCullough et al. « Placental Transcription Profiling in 6–23 Weeks’ Gestation Reveals Differential Transcript Usage in Early Development ». International Journal of Molecular Sciences 23, n^o 9 (19 avril 2022) : 4506. http://dx.doi.org/10.3390/ijms23094506.

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The human placenta is a rapidly developing transient organ that is key to pregnancy success. Early development of the conceptus occurs in a low oxygen environment before oxygenated maternal blood begins to flow into the placenta at ~10–12 weeks’ gestation. This process is likely to substantially affect overall placental gene expression. Transcript variability underlying gene expression has yet to be profiled. In this study, accurate transcript expression profiles were identified for 84 human placental chorionic villus tissue samples collected across 6–23 weeks’ gestation. Differential gene expression (DGE), differential transcript expression (DTE) and differential transcript usage (DTU) between 6–10 weeks’ and 11–23 weeks’ gestation groups were assessed. In total, 229 genes had significant DTE yet no significant DGE. Integration of DGE and DTE analyses found that differential expression patterns of individual transcripts were commonly masked upon aggregation to the gene-level. Of the 611 genes that exhibited DTU, 534 had no significant DGE or DTE. The four most significant DTU genes ADAM10, VMP1, GPR126, and ASAH1, were associated with hypoxia-responsive pathways. Transcript usage is a likely regulatory mechanism in early placentation. Identification of functional roles will facilitate new insight in understanding the origins of pregnancy complications.

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Berbigier, Alice Pereira, Juliana Helena da Silva Barros, Edilene Sousa Pontes, Cristiane Varella Lisboa, Rosana Gentile, Samanta Cristina das Chagas Xavier, Ana Maria Jansen et André Luiz Rodrigues Roque. « Trypanosomatid Richness in Wild and Synanthropic Small Mammals from a Biological Station in Rio de Janeiro, Brazil ». Pathogens 10, n^o 11 (5 novembre 2021) : 1442. http://dx.doi.org/10.3390/pathogens10111442.

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Trypanosomatids are diverse and can infect several host species, including small mammals (rodents and marsupials). Between 2012 and 2014, 91 small mammals were surveyed for trypanosomatid infection in the Estação Biológica FIOCRUZ Mata Atlântica (EFMA), an Atlantic Forest area in Rio de Janeiro that presents different levels of conserved and degraded areas. Blood, skin, liver, and spleen samples were submitted to parasitological, serological, and molecular assays to detect the infection and determine the taxonomic status of their parasites. Sixty-eight individuals (74.7%; n = 91) were infected by trypanosomatids, including fourteen mixed infected by different trypanosomatid parasites. These hosts were infected by: T. cruzi DTU TcI (n = 12), T. cruzi DTU TcIV (n = 2), T. janseni (n = 15), T. dionisii (n = 1), and T. rangeli A (n = 1) detected in blood or tissue cultures, in addition to T. cruzi DTU TcI (n = 9) and Leishmania sp. (n = 1) only by the molecular diagnosis. Serological diagnosis was positive in 38 (71.6%) individuals for T. cruzi, the same amount for Leishmania spp., and 23 (43.3%) individuals were mixed infected. These data indicate a remarkable richness of trypanosomatid species/genotypes infecting small mammals, even in a disturbed area with low mammal species diversity—as is the case of the EFMA—reinforcing the generalist aspect of these parasites.

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Hauch, Anne, Karen Brodersen, Ming Chen, Christopher Graves, Søren Højgaard Jensen, Peter Stanley Jørgensen, Peter Vang Hendriksen, Mogens Bjerg Mogensen, Simona Ovtar et Xiufu Sun. « A Decade of Solid Oxide Electrolysis Improvements at DTU Energy ». ECS Transactions 75, n^o 42 (11 janvier 2017) : 3–14. http://dx.doi.org/10.1149/07542.0003ecst.

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Pfützner, Arndt. « The German Triathlon Union (DTU) Structure and preparation for Sydney ». Les Cahiers de l'INSEP 24, n^o 1 (1999) : 89–92. http://dx.doi.org/10.3406/insep.1999.2102.

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Sihotang, Delita. « UPAYA PENINGKATAN JUMLAH KONSUMEN DITINJAU DARI ASPEK PERSAINGAN USAHA (KOMPETETIF) PADA PT. DUTA TANGKAS UTAMA (DTU) PONDOK BATU KABUPATEN TAPANULI TENGAH ». Akrab Juara : Jurnal Ilmu-ilmu Sosial 7, n^o 1 (4 février 2022) : 246. http://dx.doi.org/10.58487/akrabjuara.v7i1.1771.

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Companies that can survive are companies that have the ability to continue to improve competitiveness (competitiveness). The company's (competitive) business competition is the advantage and strength of the company in achieving long-term goals for strategic market planning to increase market share by increasing the number of consumers. This research was conducted with a population of 65 consisting of 20 tangkahans and 45 individual consumers, all of which were sampled. The research design used is descriptive correlational. The variables studied consisted of the independent variable business competition (competitive) and the dependent variable an increase in the number of consumers. This study aims to determine the effect of business competition (competitive) on the increase in the number of consumers at PT. Duta Tangkas Utama (DTU) Pondok Batu, Central Tapanuli Regency by drawing the hypothesis that there is an effect of business competition (competitive) on the increase in the number of consumers at PT. Duta Tangkas Utama (DTU) Pondok Batu, Central Tapanuli Regency. The results showed a positive relationship between business competition (competitive) with an increase in the number of consumers at PT. Duta Tangkas Utama (DTU) Pondok Batu, Central Tapanuli Regency, is 0.24 (24%), so that if it is interpreted on a value scale it can be categorized as low. The regression equation obtained is Y= 28.03 + 0.24 X which shows the effect of business competition (competitive) on the increase in the number of consumers. The results of the t test indicate that the proposed hypothesis is accepted as true, where t count 1.9995 > t table 1.9980 which means that the variable increase in the number of consumers will increase by the regression coefficient/slop (0.24) if the business competition variable (competitive) is added to the one unit. While the coefficient of determination is known that business competition (competitive) only plays a role of 5.87% to the increase in the number of consumers at PT. Duta Tangkas Utama (DTU) Pondok Batu, Central Tapanuli Regency and the remaining 94.13% is influenced by other factors not examined.

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Liu, Hongwei, Yuwei He, Jian Jiang, Xingye Liu et Haoyang Cui. « Research on the Semantic Composite Network Recognition Method of Power Distribution DTU Automation Acceptance Virtual Seat System ». Journal of Physics : Conference Series 2195, n^o 1 (1 février 2022) : 012033. http://dx.doi.org/10.1088/1742-6596/2195/1/012033.

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Abstract Aiming at semantic inaccurate recognition problem caused by the lack of professional vocabulary in the existing corpus, a composite network recognition method for the semantics of the power distribution DTU acceptance virtual agent system is proposed. This method is used to extract and merge the entity, attribute and relationship information of power equipment from multiple data sources to construct a power distribution DTU acceptance knowledge graph. In addition, the graph database is the main body and the SQL database is the extension, and the corpus is stored in a distributed manner. The acceptance test results show that the overall recognition rate of the system platform for the instructions issued by the acceptance personnel in the complex environment is 92.8%, which reduces the acceptance time by more than 70%.

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Trolle, Ellen, Matilda Nordman, Anne Dahl Lassen, Tracey A. Colley et Lisbeth Mogensen. « Carbon Footprint Reduction by Transitioning to a Diet Consistent with the Danish Climate-Friendly Dietary Guidelines : A Comparison of Different Carbon Footprint Databases ». Foods 11, n^o 8 (13 avril 2022) : 1119. http://dx.doi.org/10.3390/foods11081119.

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Dietary transitions are important for combating many of the environmental challenges humanity is facing today and reducing the global burden of disease. Different dietary patterns are associated with substantially different carbon footprints (CFs). This study aims to estimate the potential CF reduction on a transition from the current Danish diet to a plant-rich diet consistent with the Danish food-based dietary guidelines (FBDG) and to compare results obtained from the use of two different CF databases. Dietary intake data for adults aged 18–64 years from the national dietary survey 2011–2013 were used to calculate the CF of the current diet, and this was compared with the estimated CF of the plant-rich diet modelled for the FBDG. Calculations were carried out using an attributional life cycle assessment (LCA) database (AU-DTU data) and compared to calculations using a top-down hybrid consequential LCA database (BCD data). The transition from the current diet to the plant-rich diet showed a substantial estimated CF reduction of 31% with AU-DTU data, and a greater reduction with BCD data (43%). Ruminant meat reduction was the largest contributor to this CF reduction, especially with the use of BCD data, and other animal-based foods also contribute considerably to the CF reduction, especially with AU-DTU data. These results indicate that the choice of LCA methodology and CF database is important in estimation of dietary CF and for the development of guidelines to promote dietary change.

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Shaikh, M. Nasiruzzaman, Bassem A. Al-Maythalony, Mohammed I. M. Wazeer et Anvarhusein A. Isab. « Complexations of 2-thiouracil and 2,4-dithiouracil with Cd(SeCN)2and Hg(SeCN)2 : NMR and anti-bacterial activity studies ». Spectroscopy 25, n^o 3-4 (2011) : 187–95. http://dx.doi.org/10.1155/2011/586046.

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Cadmium and mercury selenocyanate complexes of 2-thiouracil (TU) and 2,4-dithiouracil (DTU) ligands have been synthesized to form complexes of the type [M(SeCN)2(TU)] and [M(SeCN)2(DTU)] (where M is Cd2+or Hg2+) and studied by various spectroscopic techniques such as IR,1H and13C NMR in solution and in the solid state for13C,15N, and113Cd nuclei. Based on IR, and solution and solid-state13C NMR data, stronger cadmium bonding to the thiouracil was observed compared to that of mercury. Anti-bacterial activities of these complexes have been investigated with standard type culture ofEscherichia coli(MTCC 443),Klebsiella pneumoniae(MTCC 109),Pseudomonas aeruginosa(MTCC 1688),Salmonella typhi(MTCC 733) andStaphylococcus aureus(MTCC 737) and show that ligands exhibit more anti-bacterial activities than that of the corresponding Cd(II) and Hg(II) complexes.

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Mikkelsen, T. « Lidar-based Research and Innovation at DTU Wind Energy – a Review ». Journal of Physics : Conference Series 524 (16 juin 2014) : 012007. http://dx.doi.org/10.1088/1742-6596/524/1/012007.

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DÍAZ-BELLO, Z., M. C. THOMAS, M. C. LÓPEZ, R. ZAVALA-JASPE, O. NOYA, B. ALARCÓN DE NOYA et T. ABATE. « Trypanosoma cruzi genotyping supports a common source of infection in a school-related oral outbreak of acute Chagas disease in Venezuela ». Epidemiology and Infection 142, n^o 1 (2 avril 2013) : 156–62. http://dx.doi.org/10.1017/s0950268813000757.

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SUMMARYTrypanosoma cruzi I, a discrete typing unit (DTU) found in human infections in Venezuela and other countries of the northern region of South America and in Central America, has been recently classified into five intra-DTU genotypes (Ia, Ib, Ic, Id, Ie) based on sequence polymorphisms found in the spliced leader intergenic region. In this paper we report the genotype identification of T. cruzi human isolates from one outbreak of acute orally acquired Chagas disease that occurred in a non-endemic region of Venezuela and from T. cruzi triatomine and rat isolates captured at a guava juice preparation site which was identified as the presumptive source of infection. The genotyping of all these isolates as TcId supports the view of a common source of infection in this oral Chagas disease outbreak through the ingestion of guava juice. Implications for clinical manifestations and dynamics of transmission cycles are discussed.

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Kelly, Jack, Richard Willden et Christopher Vogel. « Parameterising the Impact of Roughness Evolution on Wind Turbine Performance ». Wind 2, n^o 2 (20 juin 2022) : 415–28. http://dx.doi.org/10.3390/wind2020022.

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This paper presents a study investigating the effects of surface roughness on airfoil performance and its consequences for wind turbine energy yield. This study examined 51 sets of experimental data across 16 airfoils to identify trends in roughened airfoil performance. The trends are used to formulate a novel ‘roughness evolution parameter’ that can be applied to airfoils with no roughened data available to predict the impact of roughness on performance. Blade element momentum theory is used to model the performance of the DTU 10 MW reference wind turbine, with uniformly roughened blades emulated using the roughness evolution parameter. An annual energy production loss between 0.6–9.6% is found for the DTU 10 MW turbine when considering a plausible range of values for the roughness evolution parameter derived from the experimental data. A framework has been developed to evaluate how the roughness evolution parameter changes over time, informed by observed changes in wind farm performance from previous studies.

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Chen, Jin, Jiang Tao Cheng et Wen Zhong Shen. « Research on Design Methods and Aerodynamics Performance of CQU-DTU-B21 Airfoil ». Advanced Materials Research 455-456 (janvier 2012) : 1486–90. http://dx.doi.org/10.4028/scientific5/amr.455-456.1486.

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Chen, Chi-jiang, et Jing-fa Lu. « Multiparticle production in Kp and πp soft collisions in the DTU model ». Journal of Physics G : Nuclear Physics 14, n^o 3 (mars 1988) : 297–303. http://dx.doi.org/10.1088/0305-4616/14/3/006.

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Articles de revues sur le sujet « DTU »

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