Effects of different pruning ways on the sugar-decreasing matters of pumpkin (Cucurbita moschata) fruits during the ripeness

This experiment used pumpkin Longyuanlixiang as material to research the effect of different pruning ways with one branch, two branches, and three branches on the sugar-decreasing matters during the ripeness of pumpkin （Cucurbita moschata） fruits. The results showed that pectin contents of pumpkin fruits during the ripeness all increased at first and then dropped in every treatment. The pectin contents under the treatments of one branch and two branches reached the high apex after pollinated for 30 d as well as for 35 d under the treatment of three branches. Pentose and chromium contents of fruits had the same trend under different pruning ways and increased during the ripenes. Three kinds of sugar-decreasing matters contents under treatment of two branches were bigger than treatment of one branch, while treatment of three branches was the lowest.

Studies of the Ripe Characteristics of Pear

The picked pear is often ripened naturally or artificially in ethylene solution to put the pear into market earlier.When Qiuxiang pear are ripened,a great deal of ethylene is produced,the content of soluble solid,total sugar and titrable acidity are increased.The flesh is softened,the skin of fruit turns yellow,and the fruits are of aromatic favor.At different harvest time,respiration intensity appears different changing trends;the fruit qualities and the storage period are influenced too.Artificial ripening promotes fruit ripe and has a better effect than natural ripening.And Qiuxiang pear ripened artificially in earlier the middle or late of August can achieve better fruit qualities and higher economic value.

Detecting RAPD Markers Linked to Ripe Rot Resistance Genes in Chinese Wild Vitis

With F1 individuals of the cross combination 88-110 of 83-4-96 ( V. quinquangularis Rehd.) X Muscat Rose ( V. vinifera L.), the RAPD marker OPC15-1300 linked to ripe rot ( Gloeosporium fructi-genum Berk.) resistance genes in Chinese wild Vitis was gained using bulked segregation analysis (BS A). And it was found that OPC15-1300 could be hereditary from the resistant parent (83-4-96) after the marker was tested in 50 Fj plants of the cross combination 88-110, 32 accessions of 8 Chinese wild Vitis species and 14 cultivars of V. vinifera L. Also, it has provided a solid basis for molecular marker-assisted selection (MAS) and for possibly cloning disease resistance genes in the future.

The Use of Ripe Plantain (<i>Musa spp</i>.) and Peppercorns for Beverage Processing as a Pro-Vitamin A Carotenoid and Nutrition Catalyst

Plantain (Musa spp.) constitutes an essential food crop in both tropical and subtropical areas. The staple’s nutritional value and provitamin A carotenoid potential has attracted more interest and usage. Plantain (Musa spp.) optimization into food recipes has been identified to increase patronage and minimises food wastage, due to the fruit’s (pulp) high perishability nature. In this study, local over ripe plantain (Musa spp.) was sampled and used in a beverage production. The beverage was processed from pureed ripe plantain, by three days fermentation of the pureed plantain mixture, boiling, and spicing, preservation with syrup, storage, and usage. The product’s processing was followed with a sensory evaluation of the new beverage on taste, appearance, color, flavour, and overall acceptability. Majority of the respondents indicated the new product was good and was well accepted. The research sought to create food diversity, encourage more usage of the crop and to highlight the nutritional values of plantain (Musa spp.) which is particularly high in provitamin A carotenoid to address Vitamin A deficiency in low resource setting communities.

Sixty Years' Glory,One Century's Prosperity Congratulations on the 60th Anniversary of RIPED

Remaining true to our original aspiration, PetroChina Research Institute of Petroleum Exploration and Development (RIPED) has been forging ahead, going through a glorious development course of 60 years.Here, let s extend our warmest congratulations.Over the past six decades, generations of petroleum science and technology workers from the

Correlation and Cluster Analysis on the Quality Characters of New Middle-ripe Japonica Rice Varieties in Jiangsu Province

[ Objective] This study aimed to analyze the quality characteristics of the new middle-ripejapon/ca rico varieties in Jiangsu Province. [ Method] Four- teen new rice varieties included in the Middle-ripe Japon/ca Rice Regional Test in 2011 were selected as the materials. Correlation analysis and cluster analysis were carried out on their quality traits. [Result] The rice cultivars possessed stable characteristics, which were difficult to be further improved. In addition, their quality traits had extremely complicated relationships, and the differences were significant between different groups. [ Conclusion] This study will provide reference for improving the quality traits of japonica rice.

Sixty Years' Glory, One Century's Prosperity Congratulations on the 60th Anniversary of RIPED

Remaining true to our original aspiration, PetroChina Research Institute of Petroleum Exploration and Development (RIPED) has been forging ahead, going through a glorious development course of 60 years.Here, let s extend, our warmest congratulations.

RIPED and IFP Built a Long-term Cooperative Partnership

On March 15, the general geologist of PetroChina and the dean of ResearchInstitute Petroleum Exploration and Development, CNPC (RIPED), Mr. Jia Chengzao, and the scientificand development principals in the aspects of exploration and development, refining & marketing,natural gas & pipelines and from RIPED met 8 specialists leading by Mr. Olivier Appert, the dean ofInstitut Francais du Petrole (IFP). The two sides exchanged ideas broadly on the research topicsthat both parties were interested in commonly and signed a memorandum of understanding for buildinga long-term cooperative partnership between RIPED and IFP.

Ripe for Investment

SOUTH Africa is serious about encouraging further Chinese investment, especially in key areas like the beneficiation of mineral resources, improving indus trial capacity, enhancing agroprocessing and energy, said the country＇s President Jacob Zuma, He made the remarks on December 5 at the South AfricaChina Busi ness Forum in Beijing. during his state visit. A platform for Chinese and South African businesses to discuss cooperation in sectors like finance, energy,

Progress of International Cooperation Between RIPED and Foreign Institute

ＰｒｏｇｒｅｓｓｏｆＩｎｔｅｒｎａｔｉｏｎａｌＣｏｏｐｅｒａｔｉｏｎＢｅｔｗｅｅｎＲＩＰＥＤａｎｄＦｏｒｅｉｇｎＩｎｓｔｉｔｕｔｅＷａｎｇＳｈａｏｘｉａｎ，ＩｎｔｅｒｎａｔｉｏｎａｌＣｏｏｐｅｒａｔｉｏｎＢｕｒｅａｕｏｆＲＩＰＥＤ，ＣＮＰＣＡｓｔｈｅ...

Ripe for Investment

INFRASTRUCTURE plays a central role in improving competitiveness, facilitating domestic and international trade, and enhancing the African conti- nent＇s integration into the global economy, accord- ing to Gratitude Bulelani Magwanishe, South Africa＇s Deputy Minister of Public Enterprises. Magwanishe was speaking at the Opportunities for Investment Cooperation in South Africa forum on October 30, part of the 2013 COIFAIR - the World＇s Investment Summit.

Method for the real-time detection of tomato ripeness using a phenotype robot and RP-YolactEdge

In order to address the challenge of non-destructive detection of tomato fruit ripeness in controlled environments,this study proposed a real-time instance segmentation method based on the edge device.This method combined the principles of phenotype robots and machine vision based on deep learning.A compact and remotely controllable phenotype detection robot was employed to acquire precise data on tomato ripeness.The video data were then processed by using an efficient backbone and the FeatFlowNet structure for feature extraction and analysis of key-frame to non-key-frame mapping from video data.To enhance the diversity of training datasets and the generalization of the model,an innovative approach was chosen by using random enhancement techniques.Besides,the PolyLoss optimization technique was applied to further improve the accuracy of the ripeness multi-class detection tasks.Through validation,the method of this study achieved real-time processing speeds of 90.1 fps(RTX 3070Ti)and 65.5 fps(RTX 2060 S),with an average detection accuracy of 97%compared to manually measured results.This is more accurate and efficient than other instance segmentation models according to actual testing in a greenhouse.Therefore,the results of this research can be deployed in edge devices and provide technical support for unmanned greenhouse monitoring devices or fruit-picking robots in facility environments.

Fruit ripeness classification:A survey

Fruit is a key crop in worldwide agriculture feeding millions of people.The standard supply chain of fruit products involves quality checks to guarantee freshness,taste,and,most of all,safety.An important factor that determines fruit quality is its stage of ripening.This is usually manually classified by field experts,making it a labor-intensive and error-prone process.Thus,there is an arising need for automation in fruit ripeness classification.Many automatic methods have been proposed that employ a variety of feature descriptors for the food item to be graded.Machine learning and deep learning techniques dominate the top-performing methods.Furthermore,deep learning can operate on raw data and thus relieve the users from having to compute complex engineered features,which are often crop-specific.In this survey,we review the latest methods proposed in the literature to automatize fruit ripeness classification,highlighting the most common feature descriptors they operate on.

基于改进YOLOv5s的不同成熟度苹果目标检测方法

[目的]本文旨在解决在自然环境下不同成熟度苹果目标检测精度较低的问题。[方法]提出了一种改进的YOLOv5s模型SODSTR-YOLOv5s(YOLOv5s with small detection layer and omni-dimensional dynamic convolution and swin transformer block),用于不同成熟度苹果检测。首先改进YOLOv5s的多尺度目标检测层,在Prediction中构建检测160×160特征图的检测头,提高小尺寸的不同成熟度苹果的检测精度;其次在Backbone结构中融合Swin Transformer Block,加强同级成熟度的苹果纹理特征融合,弱化纹理特征分布差异带来的消极影响,提高模型泛化能力;最后将Neck结构的Conv模块替换为动态卷积模块ODConv,细化局部特征映射,实现局部苹果细粒度特征的充分提取。基于不同成熟度苹果数据集进行试验,验证改进模型的性能。[结果]改进模型SODSTR-YOLOv5s检测的精确率、召回率、平均精度均值分别为89.1%、95.5%、93.6%,高、中、低成熟度苹果平均精度均值分别为94.1%、93.1%、93.7%,平均检测时间为16 ms,参数量为7.34 M。相比于YOLOv5s模型,改进模型SODSTR-YOLOv5s精确率、召回率、平均精度均值分别提高了3.8%、5.0%、2.9%,参数量和平均检测时间分别增加了0.32 M和5 ms。[结论]改进模型SODSTR-YOLOv5s提升了在自然环境下对不同成熟度苹果的检测能力,能较好地满足实际采摘苹果的检测要求。

基于“互联网+”的医院-社区-家庭一体化中西医结合护理模式对促进自体动静脉内瘘成熟的效果研究

目的:探讨“互联网+”医院-社区-家庭一体化中西医结合护理模式在促血液透析患者自体动静脉内瘘成熟中的应用效果。方法:将82例自体动静脉内瘘期患者按照随机数字表法分为对照组和试验组,各41例。对照组术后给予常规延续性护理,试验组实施“互联网+”医院-社区-家庭一体化中西医结合护理模式进行管理。比较两组术前及术后2周、4周、8周及12周瘘静脉血管内径及血管壁厚度,两组内瘘成熟时间,两组内瘘成熟时间及首次透析吻合口自然血流量,术后3、6月透析吻合口自然血流量。结果:两组术后2周、4周、8周的血管内径无统计学意义(P>0.05)。两组术后12周的血管内径有统计学意义(P<0.05)。首次透析吻合口自然血流量无统计学意义(P>0.05),术后3、6月透析吻合口自然血流量有统计学意义(P<0.05)。

基于改进YOLOv8的田间复杂环境下蓝莓成熟度检测

为了快速精确识别田间复杂环境下的蓝莓果实的成熟度,该研究基于YOLOv8提出了一种蓝莓成熟度轻量化检测模型(MSC-YOLOv8)。首先,为了有效减少参数量,提高模型的运行速度,采用MobileNetV3为主干特征提取网络进行特征信息的提取,有利于田间复杂环境下的检测。其次,在主干特征提取网络中插入卷积注意力机制模块(convolutional block attention module,CBAM),以提高深度学习网络对蓝莓特征提取的能力。最后,引入SCYLLAIoU(SIoU)作为YOLOv8的边界框回归损失函数,以解决真实框与预测框角度不匹配的问题,进一步提高蓝莓成熟度识别的准确率。通过试验得出改进的MSC-YOLOv8模型相较于YOLOv8平均精度均值(mean average precision,mAP)提升了3.9个百分点,单张图片平均检测时间比原YOLOv8减少了3.97 ms。改进的MSC-YOLOv8模型在蓝莓数据集上取得了较优的结果,与SSD和CenterNet模型对比,mAP分别提升了4.6和1.1个百分点,在检测速度和准确率方面均有优势。该研究可为田间复杂环境下蓝莓机器人采摘提供技术支持。

基于WGS构建葡萄高密度遗传图谱及抗炭疽病QTL定位

葡萄炭疽病是一种危害葡萄成熟果实的真菌病害,严重影响葡萄的产量和品质。美洲种葡萄具有适应南方湿热气候且高抗炭疽病的特点,因此构建美洲葡萄高密度分子遗传图谱,定位其抗炭疽病QTL,利用其中的抗病基因指导葡萄抗病育种具有重要意义。本研究以美洲葡萄‘C30-5-1’165株自交后代为作图群体,基于全基因组测序(WGS)开发SNP标记,构建遗传图谱,并对葡萄抗炭疽病QTL进行分析。构建的葡萄分子遗传图谱总遗传距离为3138.74 cM,相邻标记间平均遗传距离为0.98 cM,分布均匀。根据群体炭疽病抗性表型数据,在11号连锁群上检测到1个炭疽病抗性相关QTL,命名为Cgr2,可解释表型变异5.0%,是一个微效QTL。与葡萄参考基因组比对分析发现,该QTL区域包含2个候选抗性基因,分别编码UDP糖基转移酶和类黄酮3’-单加氧酶,它们可能对葡萄炭疽病抗性起重要作用。

临沧勐库熟茶基体重金属成分分析标准物质的制备研究

[目的]建立临沧勐库熟茶基体重金属成分分析标准物质的制备方法。[方法]将筛选的临沧勐库熟茶通过干燥、粉碎、筛分、研磨、混匀、均匀性初检、分装,制备得到临沧勐库熟茶基体重金属成分分析标准物质,对均匀性和稳定性进行检验;参考食品安全国家标准,10家实验室采用微波消解-电感耦合等离子体质谱法,对标准物质中Cr、Cu、As、Cd、Pb元素含量进行联合定值,评定定值结果的测量不确定度。[结果]制备得到的临沧勐库熟茶基体重金属成分分析标准物质的均匀性良好,稳定性达到12个月,其中Cr、As元素的定值结果分别为(1.534±0.126)、(0.108±0.018) mg/kg。[结论]该临沧勐库熟茶基体重金属成分分析标准物质满足基体标准物质的要求,可用于普洱茶熟茶检测的质量控制。