基于MSP430G2553的贪吃蛇游戏设计

贪吃蛇游戏作为一款经典的益智小游戏倍受人们喜爱[1]。基于市面上的单片机综合游戏机存在严重的滞后性[2],采用TI公司的MSP430G2553 LaunchPad微处理器为主控平台,在CCS8.0和VSCODE 2019网页设计平台的开发环境下,结合G2扩展板上的机械按键,音频功放及双显示屏(LCD12864与G2自带LCD屏)实现了基于MSP430单片机的贪吃蛇小游戏设计。并着重介绍了基于MSP430单片机的贪吃蛇小游戏开发的思路,并详细给出了游戏算法功能模块的具体实现代码。实验结果表明,该系统的人机交互性能强,功能扩展性优异,对今后的基于单片机的小游戏开发具有一定的指导意义[3]。

基于Max/MSP的中国古代乐律计算及可听化平台搭建

对于传统的音乐学研究而言,中国历代乐律的系统性阐释藏于晦涩的古代史料文献;历朝历代的乐律系统均涉及艰深的数理计算。本文基于Max/MSP交互式编程语言与开发环境,探讨运用音乐科技手段初步搭建“中国古代乐律计算及可听化平台”的方法,从而促使抽象乐律知识的交互展示和体验变得简便。平台适用于教学、科普等多种场景,并探索特殊音乐数据与声音处理新方法。平台以跨学科视角探索古代乐律创新性呈现与中国传统音乐文化创造性发展。

基于MSP技术的掘进迎头前方断层识别及其应用

针对山西某矿21采区胶带运输下山迎头超前探测需求,利用本安型KDZ1114—6A30矿井巷道地质探测仪在21采区胶带运输下山2胶2位置开展了地质异常体(断层)超前探测与识别研究。研究内容包括:矿井震波超前探测技术(MSP)原理、震波数据处理流程以及综合地质解释等。探测结果显示,在巷道迎头前方,有3处地震反射异常界面,分别对应着J3、G4、J6、J7以及J8断层的位置,实现了对矿井地质异常体的准确识别,为巷道安全、快速掘进提供了技术支撑。

Effect of wall-disruption on nutrient composition and in vitro digestion of camellia and lotus bee pollens

The nutrient digestion,absorption and biological activity of bee pollen may be limited due to the complex pollen wall.Here,the effect of superfine grinding technology on the release of nutrients from bee pollen were investigated,and their antioxidant activities and in vitro digestion were explored in this study.Results showed that the content of nutrients in bee pollen increased after wall disruption.Among them,fat content increased by 22.55%-8.31%,protein content increased by 0.54%-4.91%,starch content increased by 36.31%-48.64%,soluble sugar content increased by 20.57%-29.67%,total phenolic acid content increased by 11.73%-86.98%and total flavonoids content increased by 14.29%-24.79%.At the same time,the antioxidant activity increased by 14.84%-46.00%.Furthermore,the active components such as phenolic compounds in the wall-disruption bee pollen were more readily to be released during the in vitro digestion,and easier to be absorbed because of their higher bioaccessibility.Antioxidant activities during in vitro digestion were also improved in walldisruption bee pollen.These findings provide evidence that bee pollen wall disruption was suggested,thus,it is more conducive to exerting the value of bee pollen in functional foods.

基于MSP430的照明风扇智能控制系统设计

随着生活水平提高,消费者对电器产品的智能化需求与日俱增。针对市面上风扇功能单一、智能化程度不高的问题,设计一款照明风扇智能控制系统,以TI公司MSP430单片机为控制处理中心集成多种传感器实现对环境参数和用户状态的多维度检测,实时处理数据信息与智能精细化控制,同时具备定时提醒、信息显示、无线遥控等系列功能。该控制系统具有低成本、低功耗、高智能等特点,可满足照明风扇的应用场景多样化、不同功能融合控制、绿色健康环保等应用需求。

基于MSP430的智能小车跟随行驶系统

以MSP430F5529LP单片机为控制芯片,通过TCRT5000红外传感器和HC-SRF05超声波传感器实现路径识别和车距识别,结合HC-05蓝牙模块完成数据通信。由信号检测结合PID(比例-积分-微分)算法提升小车的调速性能及跟随性能,实现速度和距离双闭环控制,并在循迹方案设计时引入模糊规则控制器提升循迹稳定性。实物调试时,从车快速响应主车信号,2个车车速控制误差平均值控制在10%以内,主从车距误差控制在6cm以内,实现了跟踪及超车行驶任务。

Effect of simulated gastrointestinal digestion on antioxidant,and anti-inflammatory activities of bioactive peptides generated in sausages fermented with Staphylococcus simulans QB7

Dry-fermented sausages are a good source of bioactive peptides,whose stability against gastrointestinal(GI)digestion determines their bioaccessibility.This study focused on evaluating the effect of peptide extracts from sausages fermented with Staphylococcus simulans QB7 during in vitro simulated GI digestion,including peptide profiles and antioxidant and anti-inflammatory activities.Peptides present in sausages were degraded during digestion,with molecular weight reduced from>12 kDa to<1.5 kDa.Besides,the content of amino acids increased from 381.15 to 527.07 mg/g,especially tyrosine being found only after GI digestion.The anti-inflammatory activities were increased after GI digestion,however,the changes in antioxidant activities were the opposite.A total number of 255,252 and 386 peptide sequences were identified in undigested,peptic-digested and GI-digested samples,respectively.PeptideRanker,BIOPEP-UWM and admetSAR were used to further predict the functional properties and intestinal absorption of the identified peptide sequences from GI digestion.Finally,18 peptides were discovered to possess either antioxidant or anti-inflammatory capacities.

The in vitro digestion fates of diacylglycerol under different intestinal conditions:a potential lipid source for lipid indigestion patients

The in vitro digestion models mimicking the gastrointestinal(GI)tract of general population and lipid indigestion patients(with lower levels of bile salts or pancreatic lipase)were selected to investigate whether diacylglycerols(DAGs)are potential good lipid sources for these patients.Linseed oil-based DAG(LD)and linseed oil(LT)were selected.LD-based emulsion((83.74±1.23)%)had higher lipolysis degree than LT-based emulsion((74.47±1.16)%)when monitoring the GI tract of normal population as previously reported.Indigestion conditions seriously decreased the digestive degree of LT-based emulsion((40.23±2.48)%-(66.50±3.70)%)while showed less influence on LD-based emulsion((64.18±2.41)%-(81.85±3.45)%).As opposed to LT-based emulsion,LD-based emulsion exhibited preference for releasing unsaturated fatty acids(especially oleic acid andα-linolenic acid)due to their different glycerolipid compositions.LD-based emulsion showed potential for providing lipids and nutrients(including essential fatty acids)for lipid indigestion patients.

Insights into sensitizing and eliciting capacity of gastric and gastrointestinal digestion products of shrimp(Penaeus vannamei)proteins in BALB/c mice

Shrimp(Penaeus vannamei)proteins have been shown an allergenic potential;however,little information is available on the sensitizing and eliciting capacity of shrimp protein digestion products.In this study,a BALB/c mice model was used to explore the allergenicity of shrimp protein sample(SPS)and their gastric and gastrointestinal digestion products(GDS/GIDS).As compared with the SPS groups,the GDS/GIDS groups caused lower specific immunoglobulins(Ig E/Ig G1)levels(P<0.05),but higher than the control groups,indicating that the digestion products sensitized the mice.Meanwhile,spleen index,mouse mast cell protease-1(m MCP-1)concentration and proportion of degranulated mast cells were significantly reduced in the GDS/GIDS groups(P<0.05);simultaneously,allergic symptoms,vascular permeability and histopathological changes of tissues were alleviated.Nevertheless,the allergenicity of digestion products cannot be eliminated and still cause systemic allergic reactions in mice.The study showed that the digestion products of shrimp still had high sensitizing and eliciting capacity.

边缘无形体MSP2的原核表达及间接ELISA抗体检测方法的建立

为建立可检测边缘无形体(Anaplasma marginale)的血清学检测方法,该研究根据GenBank收录的边缘无形体MSP2基因序列(登录号:EU526889),构建重组质粒pET28a-MSP2,原核表达获得pET28a-MSP2重组蛋白,将纯化后的蛋白作为抗原,建立间接ELISA检测方法。结果显示,该研究建立的间接ELISA方法,抗原最佳包被浓度、血清最佳稀释度和酶标二抗最佳工作浓度分别为8μg/mL、1∶400和1∶2 000,特异性、灵敏性和重复性良好。本试验成功表达并纯化了边缘无形体的MSP2蛋白,并建立了边缘无形体抗体间接ELISA方法,为边缘无形体的监测和诊断提供参考。

Simultaneous determination of typical toxic aldehydes formed during food frying and digestion using isotope dilution UHPLC-QqQ-MS/MS

An isotope dilution ultra-performance liquid chromatography-triple quadrupole mass spectrometry method was developed to simultaneously detect two typical kinds ofα,β-unsaturated aldehydes,namely 4-hydroxy-2-hexenal(4-HHE)and 4-hydroxy-2-nonenal(4-HNE),in foods.The proposed method exhibited a linear range of 10-1000 ng/mL with a limit of detection of 0.1-2.0 ng/g and a limit of quantification of 0.3-5.0 ng/g.The recovery rates of these typical toxic aldehydes(i.e.,4-HHE,4-HNE)and their d3-labeled analogues were 91.54%-105.12%with a low matrix effect.Furthermore,this proposed method was successfully applied to a real frying system and a simulated digestion system,wherein the contents of 4-HHE and 4-HNE were determined for both.Overall,the obtained results provide strong support for further research into the production of 4-HHE and 4-HNE resulting from foods during oil digestion and frying.

Changes in Polyphenols and Antioxidant Activities of Yingshan Yunwu Tea during Digestion in Vitro

[Objectives]To explore the change rule of polyphenol content and antioxidant activity of coarse old leaves of Yingshan Yunwu Tea in the process of human digestion.[Methods]The coarse and old leaves of Yunwu tea in Yingshan,Huanggang,Hubei Province were selected as the research object,and their digestion in vitro was simulated.The total polyphenol content was determined by Folin-phenol reagent colorimetric method,and the DPPH radical scavenging activity and total antioxidant activity were determined.[Results]After simulated gastrointestinal digestion in vitro,the polyphenol content and antioxidant activity of coarse old leaf tea soup showed a downward trend.After gastrointestinal digestion,the polyphenol content in tea infusion separately decreased by 31.8%and 8.5%;the scavenging rate of DPPH free radical was 97%before digestion,decreased to 92%after gastric digestion and 65%after intestinal digestion,which decreased by 5%and 27%,respectively;after gastrointestinal digestion,the total antioxidant capacity of tea soup decreased by 4.7%and 3.1%,respectively.[Conclusions]This study provided a reference for the development and application of coarse old leaves of Yingshan Yunwu tea,and provided a reference for the nutritional value evaluation and comprehensive utilization of coarse old leaves,so as to make the best use of coarse tea leaves and reduce the waste of resources.

Adsorption,in vitro digestion and human gut microbiota regulation characteristics of three Poria cocos polysaccharides

Poria cocos(PC)is a famous traditional Chinese medicine(TCM)and a widely used healthcare ingredient,which has antiobesity,enhancing immunity and improving sleep effects.Traditionally,only water-soluble poria polysaccharide(WSP)is extracted and applied for clinical application,while insoluble polysaccharide(alkali-soluble poria polysaccharide,ASP)is discarded as herb residue.However,the whole PC has also been historically utilized as functional herbal food.Considering the beneficial role of dietary fiber and the traditional use of PC,ASP may also contribute substantially to the therapy function of PC.Compared to WSP,little attention has been paid to ASP and ASP modified product carboxymethyl poria polysaccharide(CMP)which has been used as an antitumor adjuvant drug.In this study,the oil,cholesterol,metal ions and polyphenols adsorption ability,in vitro simulated digestive and the gut microbiota fermentation characteristics of WSP,ASP and CMP were studied to evaluate the functional values of three P.cocos polysaccharides(PCPs).The results showed that all three PCPs had good adsorption capacity on cholesterol,polyphenols and metal ions(Cd^(2+)/Zn^(2+)/Mg^(2+)),among which ASP showed the highest capacity than WSP and CMP.The adsorption capacity of all three PCPs on heavy metal ions(Cd^(2+)/Zn^(2+))was stronger than that of non-heavy metal ions(Mg^(2+));The in vitro digestibility of all three PCPs was very low,but WSP was slightly higher than ASP and CMP;Moreover,the indigestible residue of all three PCPs could improve the richness and diversity of gut microbiota,among which ASP had the greatest influence.In general,ASP and CMP could significantly promote the proliferation of some probiotics and inhibit the growth of some harmful bacteria.The gut microbiota diversity of CMP was reduced,but the richness of probiotics,especially Parabacteroides distasonis was significantly enhanced compared with the ASP group,and the growth of harmful bacteria Klebsiella pneumoniae was inhibited after CMP treatment.The short-chain fatty acids(SCFAs)analysis results showed that all three PCPs could significantly promote the production of acetic acid,propionic acid and the total acid content compared with blank control group,and SCFAs producing activity was positively correlated with the proliferative capacity of probiotics.Taken together,the good adsorption characteristics and gut microbiota regulatory activity of ASP may lay foundation for its lipid-lowering and immune-improving function.Additionally,the probiotic effect of CMP and ASP indicated that except for only use the water extract of PC in clinic,CMP and ASP also can be used in healthcare to take full advantage of this valuable medicine.

基于MSP430单片机的油箱监测系统设计与实现

对于汽车等机动车来说,油箱内保持充足的燃料,是其正常行驶的前提。机动车油箱液位的高度监测,能够更好地帮助驾驶员掌握机动车当前燃料情况,使行驶更加高效。本文提出基于MSP430单片机的油箱液位监测系统设计与实现,使得监测油箱液位更为简单直观,方便驾驶员对油箱液位情况实时掌握。所设计的系统创新性使用超声波探头以及单片机控制,超声波探头利用声波回传原理实现精准测量液位高度,利用单片机可在液位到达警戒值时实现报警功能,搭配Windows平台下的上位机软件,可以绘制实时液位变化的连续曲线并进行相关参数设置与显示。

基于MSP430的煤矿机电设备健康诊断系统设计

在煤矿行业中,机电设备的正常运行对矿山的生产安全和高效运行至关重要。然而,由于工作环境的特殊性和设备的复杂性,机电设备容易出现故障和损坏,给矿山运营带来严重后果。设计了一种基于MSP430的煤矿机电设备健康诊断系统。该系统使用MSP430微控制器进行数据采集和处理,并计算各个设备的健康指标。通过与预设的阈值比较,确定设备的健康状态,并通过报警和通知机制向操作人员发送警报信息,提前发现潜在问题,及时采取维修或保养措施,减少设备故障率,提高设备可靠性,降低矿山运营成本。

基于MSP430的智慧导盲小车设计

本设计提出了一种智慧导盲小车,小车以MSP430G2553为控制核心,包括电源、运动、循迹、防撞、通信等模块。小车采用直流电机为驱动,配以万向轮实现小车运动功能。智慧导盲车上安装了一对反射型红外光电传感器进行轨迹感知,将轨迹信息发送至单片机,通过处理器及其控制电路调节电机的方向和转速,实现导盲车的行进运动功能。跟随小车通过超声波传感器检测与障碍物之间的距离,实现防撞。通过调试验证表明,小车具有较好的运动稳定性,调速范围满足要求,能实现规定区域内的循迹,声光提示、车能按照要求进行跟随行驶。

基于MSP430单片机的数字电压表设计

文章介绍了基于MSP430单片机设计电压表的一种方案,旨在实现对电压的准确测量和显示。该设计具备高精度、稳定性好、测量范围广和显示便利等优势。本文详细介绍了MSP430单片机内置的模数转换器(ADC)模块的工作原理和使用方法。通过合理配置和编程MSP430微控制器,成功实现了电压的模拟信号采集、转换和数字显示。论文还介绍了相关的电压测量原理和数学算法,并对所设计的电压表进行了性能和可靠性的实验验证。实验结果表明,该设计能够准确测量各种电压输入,并通过数码显示形式直观地呈现测量结果。

基于MSP430微型单片机的智能防护报警系统

针对保障人身、财产安全的问题,该文设计了一种基于MSP430微型单片机的智能防护报警系统,其采用MSP430微型单片机作为核心控制单元,并由硬件设计和软件设计组成,硬件由主控制器、传感器以及转换器等组成,软件设计由C语言进行程序编写。系统测试表明,该系统工作稳定、误报率低,能够对非法进入、燃气泄漏以及火灾等情况进行检测,当发现异常时,蜂鸣器、LED灯会进行声光报警,并将信息发送至用户App上,实现了智能化防护报警的功能。

基于MSP432的多串口传感器数据采集软件设计

针对以MSP432为核心的多传感器异步数据采集系统中出现的中断冲突导致程序跑飞问题,通过对电路、传感器接口、时序、数据长度等方面进行分析,将电机通信接口和电子罗盘接口互换,计算出合适的通信速率,提高系统时钟工作频率。实验结果表明,通过上述设计调整能解决中断冲突导致的程序跑飞问题,同时避免修改电路,降低了研发成本。

Comparison of the effects of Ti-and Si-containing minerals on goethite transformation in the Bayer digestion of goethitic bauxite

Goethitic bauxite is a widely used raw material in the alumina industry.It is an essential prerequisite to clarify the effect of Ti-and Si-containing minerals on goethite transformation in the Bayer digestion process,which could efficiently utilize the Fe-and Al-containing minerals present in goethitic bauxite.In this work,the interactions between anatase or kaolinite with goethite during various Bayer digestion processes were investigated using X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS),transmission electron microscopy (TEM),and scanning electron microscopy (SEM).The results showed that anatase and kaolinite hindered the transformation of goethite.Anatase exerted more significant effects than kaolinite due to the dense sodium titanate layer on the goethite surface after reacting with the sodium aluminate solution.Adding the reductant hydrazine hydrate could eliminate the retarding effect by inducing the transformation of goethite into magnetite.In this process,titanium was embedded into the magnetite lattice to form Ti-containing magnetite.Furthermore,the weakening of the interaction between magnetite and sodium aluminosilicate hydrate reduced the influence of kaolinite.As a validation of the above results,the reductive Bayer method resulted in the transformation of goethite into goethitic bauxite with 98.87% relative alumina digestion rate.The obtained red mud with 72.99wt% Fe2O3could be further utilized in the steel industry.This work provides a clear understanding of the transformative effects of Ti-and Si-containing minerals on iron mineral transformation and aids the comprehensive use of iron and aluminum in goethitic bauxite subjected to the reductive Bayer method.