Soil salinization is a global constraint that significantly hampers agricultural production, with cotton being an important cash crop not immune to its detrimental effects. The rhizosphere microbiome plays critical role in plant health and growth, which assists plants resisting adverse abiotic stresses including soil salinization. This study explores the impact of on cotton, effects yield, physical chemical properties, as well bacterial community structures. results β-diversity analysis...

Environmental pollution, especially air is an alarming issue for the public, which extensively debated among academic scholars. During winter heating season, “smog” has become somewhat a normal phenomenon to local residents’ livelihood in northern China. Based on daily pollution data of regional cities China from 2014 2016, and using regression discontinuity design (RDD), study finds that makes quality worse part With start heating, it increases Air Quality Index (AQI) by 10.4%, particulate...

With the development of society and continuous progress medical industry, teaching mode basic nursing practical training course in higher vocational colleges also needs to keep pace with The Times integrate ideological political education elements order train talents both moral technical characteristics. Based on this, this article aims explore necessity implementation strategy reform colleges.

Heart failure (HF) is a severe manifestation or late stage of various heart diseases. As an anti-inflammatory nutrient, dietary fiber has been shown to be associated with the progression and prognosis cardiovascular diseases (CVDs). However, little known about relationship between intake mortality in HF survivors. This study evaluated association all-cause CVD-caused among Data for were extracted from National Health Nutrition Examination Survey 1999-2018. Dietary information was obtained by...

Abstract Endozoochorous dispersal of seeds by livestock has long attracted the attention grassland scientists. However, little is known about seed after ingestion Kazakh sheep on dry grasslands in Tianshan Mountains. The objective this experiment was to learn more recovery and germinability from 17 plant species either actual or simulated (i.e. insertion through a rumen fistula) sheep. passage time gut ranged 12 96 h. More than 80% all recovered were defecated 24–48 h ingestion. mean...

Endozoochorous dispersal of seeds by livestock has long attracted the attention grassland scientists, but little is known about seed via Tan sheep dung on dry grasslands Loess Plateau. We investigated composition bank under summer and winter rotational grazing regimes at different stocking rates (2.7, 5.3 8.7sheepha–1), assessed relationships between mass shape, egested seedling density species richness diversity. also effects rate season diversity bank. Seeds 10 pasture germinated from with...

Abstract Aims Viable seeds in herbivore dung constitute the seed bank, and contribution of livestock to this bank grazing pastures is often overlooked. Grazing season (warm cold), characteristics (size shape), forage preference are main factors that affect size composition ultimately grassland ecology. However, how these three interact unclear. Methods We collected yak as well common plant species from warm- cold-season alpine meadows northeastern Qinghai-Tibetan Plateau, explored shape)...

Three-dimensional path planning is instrumental in decision making and obstacle avoidance for deep-sea mining vehicles (DSMV). However, conventional particle swarm algorithms have been prone to trapping local optima slow convergence rates when applied underwater robot planning. In order secure a safe economical three-dimensional the DSMV from area storage base connection with innovative system, this paper proposes multi-objective optimization algorithm based on improved (IPSO) Firstly, we...

Headspace solid phase micro extraction was used for of volatile compounds characterizing sea buckthorn wine, raw juice, and new fermented must in Qinghai province (China). Extracted were identified by mass spectrometry after gas-chromatographic analysis. There 53, 48, 37, 38 the fraction sweet, dry comprising higher alcohols, ethyl esters, acetates, fatty acids, carbonyl compounds, which may contribute to typical flavor wine. After cluster analysis, concentration showed good ability describe...

Characterization of the structure and pharmacological activity Berberis dasystachya Maxim., a traditional Tibetan medicinal edible fruit, has not yet been reported. In this study, central composite design (CCD) combined with response surface methodology (RSM) was applied to optimize extraction conditions B. oil (BDSO) using supercritical carbon dioxide (SC-CO2) method, results were compared those obtained by petroleum ether (PEE) method. The chemical characteristics BDSO analyzed, its...

Abstract Burrows provide burrowing animals with a place to hibernate, reproduce, and avoid predators harsh weather conditions thus have vital impact on their survival. However, the general physical characteristics ecological functions of Marmota himalayana burrows as well whether there are differences in burrow traits under different terrains (e.g., sunny slopes, shady flat areas) not understood. From July August 2019 (warm season), we used unmanned aerial vehicles fly at low altitudes slow...

The kinetics of β-carotene degradation were studied in different aqueous phases to simulate the production sea buckthorn wine. volatile compounds from model wine and an system identified by mass spectrometry after gas-chromatographic analysis. results showed that temperature was major factor affecting solution. Alcohol also effect on degradation. speed slower than a pure water system, while it proceeded more quickly raw juice must presence extraneous oxidants altered kinetic mode water. Six...

Abstract In grazing ecosystems, mature seeds fall directly to the soil form seed bank (SSB), or are ingested by livestock become part of dung (DSB; i.e., circulation). Both SSB and DSB basis for natural regeneration vegetation. However, little is known about relationships between SSB, DSB, aboveground vegetation (AGV) community under different stocking rates (SRs). This study investigated in Tan sheep ( Ovis aries ) dung, AGV at SRs (0, 2.7, 5.3, 8.7 ha –1 a semiarid region Loess Plateau...

Soil moisture is one of the most critical soil components for sustained plant growth and grassland management. Unmanned aerial vehicles (UAVs) are gradually replacing manual labor in various aspects However, their potential monitoring grasslands remains largely unexplored. High vegetation coverage frequent rainfall Tibetan Plateau pose a challenge personnel working alpine meadows. To explore UAV technology detection these areas, we conducted reduction experiment Maqu County, China to...

The Qilian Mountain Grassland is an important animal husbandry production base in northwestern China. Horses, cattle, and sheep are the main livestock, which widely distributed desert grasslands alpine meadows around Mountains. Grazing livestock produce large amounts of feces, germinable seeds feces constitute seed banks. Research on size, plant species composition, distribution dung banks may help understand interactions between grass inform comprehensive management practices for grazing...

mg之间, 形状指数在0.001-0.12之间,均为中等或较大类型的球(圆)形种子; 种子被绵羊采食后的排放动态符合高斯模型: Y = 0.02 + 0.74e -0.5((X -29.61)/9.41) 2 , 种子排放高峰期集中在采食后的24-36 h时间段内; 种子回收率最大的是洋甘草(Glycyrrhiza glabra)(39.25%),最小的是草木犀(Melilotus officinalis)(4.28%);平均滞留时间最长的是草木犀(37.19h), 最短的是新疆棘豆 (Oxytropis sinkiangensis)(22.33 h); 种子回收率与种子大小和形状指数之间分别具有符合形如Y 6.45 2.05X -0.04X 和Y 2.59 36.97e -24.47X 的函数关系模型; 平均滞留时间与种子大小和形状指数之间分别具有符合形如Y 12.48 37.44e -0.07X 3.93 2055.33X-21757.99X 的函数关系模型, 此结果表明, 较大、较小和形状不规则的豆科种子较易被绵羊消化和排泄。经 绵羊消化道作用后,...

This study was designed to isolate and identify a novel β-carotene cleaving microorganism from sea buckthorn juice detect the carotenoid-derived aroma compounds catalyzed by microbial enzyme. The strain characterized based on morphological biochemical properties, as well part of its 16S rDNA sequence analysis. It then identified using Basic Local Alignment Search Tool (BLAST) classified coagulase-negative Staphylococcus pasteuri (GeneBank Accession No. KP171185). β-Ionone β-cyclocitral were...

Abstract The dung seed bank (i.e. vegetation renewal) and greenhouse gas (GHG, e.g. carbon dioxide (CO 2 ), methane (CH 4 ) nitrous oxide (N O), which contributing to global warming) emissions materials circulation) are two of the most important ecological functions livestock in grassland ecosystems. With decomposition faeces, seedling density (e.g. increase) GHG emission decrease) changes proceeded simultaneously. Although these processes have so far been studied isolation, almost no...