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#34518225   // To Up

Integrated farming with intercropping increases food production while reducing environmental footprint.

Food security has been a significant issue for the livelihood of smallholder family farms in highly populated regions and countries. Industrialized farming in more developed countries has increased global food supply to meet the demand, but the excessive use of synthetic fertilizers and pesticides has negative environmental impacts. Finding sustainable ways to grow more food with a smaller environmental footprint is critical. We developed an integrated cropping system that incorporates four key components: 1) intensified cropping through relay planting or intercropping, 2) within-field strip rotation, 3) soil mulching with available means, such as crop straw, and 4) no-till or reduced tillage. Sixteen field experiments, conducted with a wide range of crop inputs over 12 consecutive years (2006 to 2017), showed that the integrated system with intercropping generates significant synergies-increasing annual crop yields by 15.6 to 49.9% and farm net returns by 39.2% and decreasing the environmental footprint by 17.3%-when compared with traditional monoculture cropping. We conclude that smallholder farmers can achieve the dual goals of growing more food and lowering the environmental footprint by adopting integrated farming systems.
Qiang Chai, Thomas Nemecek, Chang Liang, Cai Zhao, Aizhong Yu, Jeffrey A Coulter, Yifan Wang, Falong Hu, Li Wang, Kadambot H M Siddique, Yantai Gan

1561 related Products with: Integrated farming with intercropping increases food production while reducing environmental footprint.

1 kit96 wells100 Reservoirs/Unit100 Reservoirs/Unit

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#34517646   2021/08/05 To Up

Ultrasensitive detection of trace chemical warfare agent-related compounds by thermal desorption associative ionization time-of-flight mass spectrometry.

A thermal desorption associative ionization time-of-flight mass spectrometer was developed for ultrasensitive detection of semi-volatile chemical warfare agents (CWAs). The excited-state CHCl-induced associative ionization method presented a soft ionization characterization and an excellent sensitivity towards CWAs. The detection sensitivities of the investigated nine CWA-related substances were 2.56 × 10-5.01 × 10 counts ng in a detection cycle (30 s or 100 s). The corresponding 3σ limits of detection (LODs) were 0.08-3.90 pg. Compared with the best-documented LODs via the dielectric barrier discharge ionization (DBDI) and secondary electrospray ionization (SESI), the obtained LODs of the investigated compounds were improved by 2-76 times. Additionally, the measured sensitivity of 2-Chloroethyl ethyl, a proxy for mustard gas, is 550 counts pptv, which exceeds the DBDI and SESI's corresponding values (4.4 counts pptv and 6.5 counts pptv) nearly by two orders of magnitude. A field application simulation was conducted by putting a strip of PTFE film contaminated with the CWA-related agent into the thermal desorption unit. The simulation showed that the sensitivities of the instrument via swipe surveying could achieve 2.19 × 10 to 5.23 × 10 counts ng. The experimental results demonstrate that the excited-state CHCl-induced associative ionization is an ultrasensitive ionization method for CWAs and reveal a prospect for improving the detection of CWA species future.
Jingyun Huang, Jinian Shu, Bo Yang, Yedong Guo, Zuojian Zhang, Kui Jiang, Zhen Li

1769 related Products with: Ultrasensitive detection of trace chemical warfare agent-related compounds by thermal desorption associative ionization time-of-flight mass spectrometry.

2525100ug 6 ml Ready-to-use 2x96 well plates96/kit1 mg0.1 mg50 assays250tests

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#34517598   2021/07/22 To Up

Determination of sorbitol dehydrogenase in microsamples of human serum.

The enzyme sorbitol dehydrogenase (SDH) is an emerging biomarker of drug-induced liver injury (DILI). This paper introduces determination of SDH in microliter samples of human serum at commercial glucose test strips. The determination relies on the oxidation of NADH cofactor, which is used by SDH reacting with its substrates. The strips could detect NADH down to 5.0 μM (5 pmol), which was two orders of magnitude better than the prior relevant limit of detection. The concentration of cofactors (NADH, NAD) and substrates (fructose, sorbitol) for SDH determination at a strip was optimized via internally-calibrated amperometric assays at a chitosan/nitrogen-doped carbon nanotube electrode. Such an electrode provided reliable assay data for over 3 months with no need for its reactivation. The assays yielded kinetic parameters K and k and demonstrated higher apparent affinity of SDH for NADH and fructose than NAD and sorbitol. The glucose strips detected SDH down to 98 pM (98 amol) in buffers and 200 pM (200 amol) in human serum after 20-min incubation with an optimized (c ≥ 10K) mixture of cofactor + substrate. The charge ΔQ flowing through a strip was linear (R, 0.994) up to 6.0 nM SDH, which covered enzyme's clinical range. The ΔQ was selective for SDH, independent of sample matrix, and free of interferences from indigenous glucose. The use of glucose strip as an electrolytic microcell to detect picomoles of NADH and attomoles of SDH is a step toward a point-of-care monitoring of DILI.
Michael Bekhit, Waldemar Gorski

1983 related Products with: Determination of sorbitol dehydrogenase in microsamples of human serum.

10ml96T5ml100 μg100.00 ug2 100 μg0.1 mg100 μg100 μg100 μg100 μg

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#34515537   2021/09/13 To Up

Effects of Simulated Adverse Environmental Conditions Related to Actual Conditions at Health Promoting Hospitals on the Performance of Blood Glucose Testing by Glucose Meters.

Annual peaks in temperature and humidity exceed manufacturers' specifications for blood glucose test strip storage in Thailand. Health Promoting Hospitals (HPH) do not always provide the same level of health services that hospitals do since they often only turn on air-conditioning units during working hours.
Napaporn Apiratmateekul, Wanutchaya Duanginta, Methawadee Phetree, Kunchit Kongros, Wanvisa Treebuphachatsakul

1865 related Products with: Effects of Simulated Adverse Environmental Conditions Related to Actual Conditions at Health Promoting Hospitals on the Performance of Blood Glucose Testing by Glucose Meters.

200ul100 assays 1KG20025 mg250ul2x96 well plate 5 G2.5 mg100 ug100 assays

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#34515505   2021/09/13 To Up

First Report of Southern Blight Caused by on in China.

is an evergreen shrub-vine in the family Celastraceae, widely used as a groundcover or a vine to climb walls, or traditional herbal medicine in China. In August 2019, typical southern blight symptoms that included basal stem rot and the presence of sclerotia in rotted tissue were observed on in Kunshan city, Jiangsu province, China. Disease incidence was estimated at approximately 15 to 20%; meanwhile, approximately 30 to 40% of diseased plants died. The infected plants showed brown to dark stem necrosis near the base, leaf yellowing and wilting. White mycelia and white to dark reddish-brown sclerotia were observed at the base of the stem and rotten tissue. To isolate the causal organism, infected stem tissue and sclerotia collected from diseased plants in a median strip in Kunshan (31°23'40"N, 120°54'57"E) were disinfected with 70% ethanol for 2 to 3 sec, followed by 2 min in 5% NaClO, rinsed three times with sterile water, then plated on potato dextrose agar (PDA) medium, and incubated at 25°C. Isolated colonies were subcultured by needle tip transfer 3 days later. Isolates had white mycelia on PDA, with a radial growth rate of 15.2 to 18.7 mm/day. White and orange sclerotia were developed after 5 to 8 days and eventually turned dark reddish-brown. The sclerotia were globoid or irregular with surface markings (1.4 to 4.3 mm diam.; mean = 2.59 mm; = 50) on PDA, and the average number of sclerotia produced per Petri dish ranged from 35 to 85 (mean = 52; = 10). Microscopic observations found septal hyphae and clamp connections. These morphological features were identical to the description of (syn. var. ) (Mukherjee et al. 2015; Punja and Damiani 1996; Stevens 1931). A representative isolate YKY2020.01 was stored in the Key laboratory of National Forestry and Grassland Administration on Ecological Landscaping of challenging Urban Sites in Shanghai. For molecular identification, DNA of the isolate YKY2020.01 was extracted using the Fungal DNA Kit (OMEGA bio-tek, China). The internal transcribed spacer region (ITS fragment including ITS1, 5.8S rDNA, and ITS2 region) was amplified with primers ITS1/ITS4 (White et al. 1990), and then sequenced by Sangon Biotech (Shanghai, China). BLAST analysis in NCBI found the ITS sequence of YKY2020.01 (MW916955) was 99.84% similar to strain CBS272.30 (MH855140). Phylogenetic analysis using maximum likelihood (ML) method placed isolate YKY2020.01 in the same clade as . To evaluate pathogenicity, hyphal blocks (0.7 cm diam.) were placed at the base of the stem of healthy ( = 5 plants). Five healthy plants were inoculated by uncolonized agar blocks as controls. All plants were kept in a greenhouse with a temperature range from 21 to 25.6°C (mean = 24.9°C) and relative humidity of 50%. Inoculated plants were symptomatic after 3 days and wilted after 12 days. Symptoms in inoculated plants were similar to those observed under natural conditions, whereas the control group remained asymptomatic. The fungal pathogen was reisolated from symptomatic tissue and confirmed as . To the best of our knowledge, this is the first report of causing southern blight on in China and worldwide. This finding provides concise and practical information on the newly emerged disease of , which is beneficial for future disease management. References: Mukherjee, A. K., et al. 2015. J. Plant Pathol. 97:303. Punja, Z. K. and Damiani, A. 1996. Mycologia 88:694. Stevens, F. L. 1931. Mycologia 23:204. White, T. J., et al. 1990. Page 315 in PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, CA. Funding: This work was supported by the Key Project of Science and Technology Commission of Shanghai Municipality (19DZ1204102).
Ronghua Sun, Guangliang Lu, Yuezhong Li, Qingquan Luo

1461 related Products with: First Report of Southern Blight Caused by on in China.

96 wells100ug96 tests100 tests100 assays 100ul100ug Lyophilized100 μg 5 G

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#34513794   2021/08/25 To Up

Variations in COVID-19 Spread and Control Measures in the Palestinian Territories.

Palestinians are facing the epidemic while they are the only occupied country globally, with around 2 million inhabitants under siege in the Gaza Strip (GS) for the last 14 years and have no control over the health of the Palestinians in East-Jerusalem (EJ). Such catastrophic situations created a variety in the spread of the COVID-19 pandemic in different territories. This study aimed to explore variation in COVID-19 spread, risk factors, and intervention activities in the three Palestinian territories: West Bank (WB), EJ, and GS to learn from the current gaps to overcome this pandemic and be prepared for future emergencies. Epidemiological data regarding COVID-19 were obtained from online websites, Palestinian national reports, WHO reports, and scientific publications. Morbidity and mortality indicators in Palestine are higher than the global level with rate variation in the three territories. COVID-19 incidence and mortality rates are higher in EJ and lowest in GS, while case fatalities are around 1% all over the country. Social gathering and lack of readiness of the fragmented health systems (there are two systems; Palestinian serves the WB and GS and Israeli serves the EJ) are risk factors in the three Palestinian territories. The most prominent risk in GS is overcrowding, while the movement of the workers inside Israel and travel are more prevalent in the WB and EJ. The WHO and international organizations play an active role in responding to a community spread, mainly national coordination, risk communication and community engagement, laboratory support, surveillance and procurement, and supply management. Recommendations include restructuring the national committees, reviewing and standardization of the national protocols, expanding infections prevention training, supporting and developing the capacity of laboratories, and setting the role of NGOs besides community engagement and participation.
Yehia Abed, Amira Shaheen, Ali Abedrabbo

2375 related Products with: Variations in COVID-19 Spread and Control Measures in the Palestinian Territories.

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#34513618   2020/07/01 To Up

Systemic Overview of Microstrip Patch Antenna's for Different Biomedical Applications.

Timely diagnosis is the most important parameter for the detection and hindrance with tissues (infected). Many conventional techniques are used for the determination of the chronic disease like MRI, X-ray, mammography, ultrasound and other diagnosing methods. Nevertheless, they have some limitations. We epitomize between 4 and 34 % of all carcinogenic tissues are lacking because of weak, in adequate malignant/benign cancer tissue on the contrary. So, an effective alternative method is the valid concern in the field of medical right now. Imaging with the help of patch antenna to detect chronic disease like breast cancer, oxidative stress syndrome etc. it has been proved to be a suitable potential method, and there are many works in this area. All materials have different conductivity and permittivity. With the help of these antennas, a 3D tissue structure which has different conductivity and permittivity is modelled in high-frequency structure simulator through finite element method which resolves electromagnetic field values and a microstrip patch antenna operation process. As compared with conventional antennas, micro strip patch antennas have enhanced benefits and better prospects. An integrated Antenna plays an important or crucial role for supporting many applications in biomedical, commercial and in military fields. The Antenna designed for these applications should be wideband, not sensitive to the human body. In this present review, the precise application of the Antenna in different biomedical aspects is considered. Furthermore, the author has also discussed the analytical results using simulation models and experimental results for some of the significantdisease.
Govind Arora, Paramjot Maman, Ameya Sharma, Nitin Verma, Vivek Puri

2265 related Products with: Systemic Overview of Microstrip Patch Antenna's for Different Biomedical Applications.

0.2 mg0.25 mg0.1 mg0.1 mg0.1 ml1 ml250 ml1 LITRE100 ml25 µg20 ug25 µg

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#34513078   2021/01/01 To Up

Modified Mitral Valve Repair with Its Insufficiency of Ischemic Genesis.

was to assess the effectiveness of modified mitral valve repair in comparison with traditional methods of correcting ischemic mitral regurgitation.
V E Vaykin, M V Ryazanov, D D Zhiltsov, S A Zhurko, A B Gamzaev, G V Bolshukhin, S A Fedorov, A P Medvedev

1356 related Products with: Modified Mitral Valve Repair with Its Insufficiency of Ischemic Genesis.

1 kit(s) 50 ug 1 kit(s) 1 kit(s) 96T 100 Slides 100 Slides 1g 1 kit(s) 1 kit(s) 100 Slides 100 Slides

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#34512688   2021/08/27 To Up

Changes in Root-Shoot Allometric Relations in Alpine Norway Spruce Trees After Strip Cutting.

Silvicultural interventions such as strip cuttings can change the resource availability of the edge trees. This may alter tree allometry, as light regime, water, and nutrient availability can change at the forest edge. Increased root growth may optimize resource uptake and/or enhance tree anchorage to withstand the altered wind regime. However, little is known about the patterns of the root-shoot allometric responses to strip cuttings. In three alpine stands differing in climate, site productivity, and stand characteristics, we selected 71 Norway spruce trees and took increment cores from stems, root collars, and main roots. This enabled us to study changes in the long-term root-stem allometry for 46 years and short-term allometric responses to intervention. The effects of cutting were compared between edge trees and trees from the stand interior in 10 years before and after the intervention. The long-term allocation to roots increased with stem diameter, with the strongest effects on the regularly managed stand with the tallest and largest trees. These results support the allometric biomass partitioning theory, which postulates resource allocation patterns between different plant organs to depend on plant size. Strip cutting on north-facing slopes boosted edge-tree growth in all plant compartments and enhanced allocation to roots. This change in allometry started 2 years after cutting but disappeared 7-8 years later. In the post-cutting period, the highest root-shoot increase was observed in the small trees independent of the site. This indicates the change in growing conditions to have the strongest effects in formerly suppressed trees. Thus, the effect of such acclimation on the wind firmness of subdominant spruce trees is a question with high importance for optimizing cutting layouts in lowering post-cutting vulnerability to disturbance. The results from this case study contribute to a better understanding of the structural acclimation of spruce trees from high-elevation forests to new forest edges. However, for a more mechanistic understanding of environmental drivers, further analyses of tree-ring stable isotopes are recommended.
Petia Simeonova Nikolova, Jan Geyer, Peter Brang, Paolo Cherubini, Stephan Zimmermann, Holger Gärtner

2066 related Products with: Changes in Root-Shoot Allometric Relations in Alpine Norway Spruce Trees After Strip Cutting.

500 tests500 tests20 ul100 ml50 ulOne 96-Well Strip Micropl500 tests50 ul500 tests20 ul500 ml50 ul

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