The cGAS-STING-interferon regulatory factor 7 pathway regulates neuroinflammation in Parkinson's disease

Interferon regulatory factor 7 plays a crucial role in the innate immune response.However,whether interferon regulatory factor 7-mediated signaling contributes to Parkinson's disease remains unknown.Here we report that interferon regulatory factor 7 is markedly up-regulated in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced mouse model of Parkinson's disease and co-localizes with microglial cells.Both the selective cyclic guanosine monophosphate adenosine monophosphate synthase inhibitor RU.521 and the stimulator of interferon genes inhibitor H151 effectively suppressed interferon regulatory factor 7 activation in BV2 microglia exposed to 1-methyl-4-phenylpyridinium and inhibited transformation of mouse BV2 microglia into the neurotoxic M1 phenotype.In addition,si RNA-mediated knockdown of interferon regulatory factor 7 expression in BV2 microglia reduced the expression of inducible nitric oxide synthase,tumor necrosis factorα,CD16,CD32,and CD86 and increased the expression of the anti-inflammatory markers ARG1 and YM1.Taken together,our findings indicate that the cyclic guanosine monophosphate adenosine monophosphate synthase-stimulator of interferon genes-interferon regulatory factor 7 pathway plays a crucial role in the pathogenesis of Parkinson's disease.

Interplay between microglia and environmental risk factors in Alzheimer's disease

Alzheimer s disease,among the most common neurodegenerative disorders,is chara cterized by progressive cognitive impairment.At present,the Alzheimer’s disease main risk remains genetic ris ks,but major environmental fa ctors are increasingly shown to impact Alzheimer’s disease development and progression.Microglia,the most important brain immune cells,play a central role in Alzheimer’s disease pathogenesis and are considered environmental and lifestyle"sensors."Factors like environmental pollution and modern lifestyles(e.g.,chronic stress,poor dietary habits,sleep,and circadian rhythm disorde rs)can cause neuroinflammato ry responses that lead to cognitive impairment via microglial functioning and phenotypic regulation.However,the specific mechanisms underlying interactions among these facto rs and microglia in Alzheimer’s disease are unclear.Herein,we:discuss the biological effects of air pollution,chronic stress,gut micro biota,sleep patterns,physical exercise,cigarette smoking,and caffeine consumption on microglia;consider how unhealthy lifestyle factors influence individual susceptibility to Alzheimer’s disease;and present the neuroprotective effects of a healthy lifestyle.Toward intervening and controlling these environmental risk fa ctors at an early Alzheimer’s disease stage,understanding the role of microglia in Alzheimer’s disease development,and to rgeting strategies to to rget microglia,co uld be essential to future Alzheimer’s disease treatments.

Knockout of C6orf120 in Rats Alleviates Concanavalin A-induced Autoimmune Hepatitis by Regulating Macrophage Polarization

Objective The effect of the functionally unknown gene C6orf120 on autoimmune hepatitis was investigated on C6orf120 knockout rats(C6orf120^(-/-))and THP-1 cells.Method Six–eight-week-old C6orf120^(-/-)and wild-type(WT)SD rats were injected with Con A(16 mg/kg),and euthanized after 24 h.The sera,livers,and spleens were collected.THP-1 cells and the recombinant protein(rC6ORF120)were used to explore the mechanism in vitro.The frequency of M1 and M2 macrophages was analyzed using flow cytometry.Western blotting and PCR were used to detect macrophage polarization-associated factors.Results C6orf120 knockout attenuated Con A-induced autoimmune hepatitis.Flow cytometry indicated that the proportion of CD68^(+)CD86^(+)M1 macrophages from the liver and spleen in the C6orf120^(-/-)rats decreased.C6orf120 knockout induced downregulation of CD86 protein and the mRNA levels of related inflammatory factors TNF-α,IL-1β,and IL-6 in the liver.C6orf120 knockout did not affect the polarization of THP-1 cells.However,rC6ORF120 promoted the THP-1 cells toward CD68^(+)CD80^(+)M1 macrophages and inhibited the CD68^(+)CD206^(+)M2 phenotype.Conclusion C6orf120 knockout alleviates Con A-induced autoimmune hepatitis by inhibiting macrophage polarization toward M1 macrophages and reducing the expression of related inflammatory factors in C6orf120^(-/-)rats.

Diverse phenotype of Méenière’s disease associated with family history,thyroid disorder,migraine and associated disorders

Objective:To better understand the clinical phenotype of Méenière’s disease(MD),we examined family history,thyroid disorder,migraine,and associated disorders in complaints of people living with MD.Method:We designed the study as a retrospective and examined data gathered from 912 participants with MD.Their data were originally collected by the Finnish M′eni`ere Federation(FMF).The survey data included individual case histories for environmental factors,comorbidities,disease-specific complaints,impact-related questions,cognitive complaints,health-related quality of life(HRQoL),and sense of coherence(SOC).Results:We observed significant differences between those with and without sporadic occurrence,family history,thyroid disorder,and migraine-associated complaints.Family history explained 20%of variability in patient complaints.Patients with a family history of MD whose disease started at younger age experienced balance problems,more severe vertigo spells,more severe vestibular drop attacks(VDA),and less nausea,although they had good SOC.Thyroid disorder explained 14%of variability in patient complaints.MD patients with a thyroid disorder comorbidity suffered more often from constant dizziness,balance problems,greater impact of hearing problems,cognitive complaints,and poor HRQoL.Migraine explained 12%of variability in patients’complaints and was associated with poor SOC and cognitive balance problems.MD patients with both thyroid disorder and migraine used antidepressants more often than other groups.Logistic regression analysis showed comorbidities of ischemic brain disorder(among 7.1%),kidney insufficiency(among 1.2%),and diabetes(among 7.3%)had statistically significant but restricted association with balance and gait problems,VDA,and reduced HRQoL.Conclusions:Family history of MD and thyroid disorder or migraine comorbidities in MD influence the complaint pattern and partially explain complex symptom profiles,including symptoms of cognitive problems.Confounders play a minimal role in complaint profile and impact of MD whereas comorbidities influence the complaint structure and partly explain the complex symptom profile in MD.

Astronomic background of global huge earthquakes at beginning of 21st century

Since the beginning of the 21st century,major earthquakes have frequently occurred worldwide.To explore the impact of astronomical factors on earthquakes,in this study,the statistical analysis method of correlation is used to systematically analyze the effects of astronomical factors,such as solar activity,Earth’s rotation,lunar declination angle,celestial tidal force,and other phenomena on M≥8 global earthquakes at the beginning of the 21st century.With regard to solar activity,this study focuses on the analysis of the 11-year and century cycles of solar activity.The causal relationship of the Earth’s rotation is not obvious in this work and previous works;in contrast,the valley period of the solar activity century cycle may be an important astronomical factor leading to the frequent occurrence of global earthquakes at the beginning of the 21st century.This topic warrants further study.

Stability analysis of intermittently jointed rock slopes based on the stepped failure mode

In practical engineering,due to the noncontinuity characteristics of joints in rock slopes,in addition to plane failure,stepped sliding failure may occur for intermittently jointed rock slopes.Especially for intermittently bedding jointed rock slopes,the correlation and difference in strength parameters between joints and rock bridges,along with the various failure modes and intermittency of rock bridges,contribute to the complexity of stepped failure modes and the unpredictability of failure regions.Based on the upper-bound limit analysis method and multi-sliders step-path failure mode,considering the shear and tensile failure of rock bridges and the weakened relationship between the strength parameters of rock bridges and jointed surfaces,by introducing the modified M-C failure criterion and the formula for calculating the energy consumption of tensile failure of rock bridges,two failure mechanisms are constructed to obtain the safety factor(F_(s))of intermittently jointed rock slopes.The sequential quadratic programming method is used to obtain the optimal upper-bound solution for F_(s).The influence of multiple key parameters(slope height H,horizontal distance L,Slope angleβ,shear strength parameters of the rock bridgeφr and cr,Dimensionless parameter u,weakening coefficients of the internal friction angle and cohesion between the rock bridges and joint surfaces Kφand Kc)on the stability analysis of intermittently jointed rock slopes under the shear failure mode of rock bridges as well as under the tensile failure mode is also explored.The reliability of the failure mechanisms is verified by comparative analysis with theoretical results,numerical results,and landslide cases,and the variation rules of F_(s)with each key parameter are obtained.The results show that F_(s) varies linearly withφr and cr of the rock bridge and with K_(φ)and K_(c),whereas F_(s)changes nonlinearly with H and L.In particular,with the increase in Kφand Kc,Fs increases by approximately 52.78%and 171.02%on average,respectively.For rock bridge tensile failure,F_(s) shows a nonlinearly positive correlation withφr,cr,Kφand Kc.In particular,with the increase in Kφand Kc,Fs increases by approximately 13%and 61.69%on average,respectively.Fs decreases rapidly with increasing slope gradientβand decreasing dimensionless parameterμ.When Kφand Kc are both less than 1.0,the stepped sliding surface occurs more easily than the plane failure surface,especially in the case of tensile failure of the rock bridge.In addition,rock slopes with higher strength parameters,taller heights,and greater weakening coefficients are prone to rock bridge tension failure with lower Fs,and more attention should be given to the occurrence of such accidents in actual engineering.

Understanding the Activity Performance of Comets 38P/Stephan-Oterma,64P/Swift-Gehrels and C/2017 M4(ATLAS)through Broadband Photometric Observations

In this work,we report observations of three comets:38P/Stephan-Oterma,64P/Swift-Gehrels,and C/2017 M4(ATLAS),conducted with the Nanshan one-meter wide-field telescope in 2018 August and November,and 2019January.We extracted morphological features through image enhancement techniques and calculated the dust activity parameter,Afρ,along with dust mass loss rates and coma color indices using broadband photometric data.Our morphological analysis uncovered a spectrum of dust characteristics among the observed comets,ranging from a significant twisted structure in comet 38P/Stephan-Oterma’s coma to the regular coma envelope surrounding comet 64P/Swift-Gehrels.The Afρvalues varied between 148.8±0.3 cm for 64P/Swift-Gehrels and1118.5±6.2 cm for C/2017 M4(ATLAS)(measured within a reference aperture radius ofρ=6″),indicating a range from moderate to high activity levels.Dust mass loss rates were estimated from 328.1 kg s^(-1)for comet 64P/Swift-Gehrels to 1395.5 kg s^(-1)for comet C/2017 M4(ATLAS).The color indices of comets 38P/Stephan-Oterma and C/2017 M4(ATLAS)closely resemble the average colors of active short-period comets and active longperiod comets,respectively.In contrast,64P/Swift-Gehrels exhibits a significantly bluer hue than typical Jupiter family comets.

Role of Oncostatin M in the prognosis of inflammatory bowel disease: A meta-analysis

BACKGROUND Oncostatin M(OSM)is a pleiotropic cytokine which is implicated in the path-ogenesis of inflammatory bowel disease(IBD).AIM To evaluate the prognostic role of OSM in IBD patients.METHODS Literature search was conducted in electronic databases(Google Scholar,Embase,PubMed,Science Direct,Springer,and Wiley).Studies were selected if they reported prognostic information about OSM in IBD patients.Outcome data were synthesized,and meta-analyses were performed to estimate standardized mean differences(SMDs)in OSM levels between treatment responders and non-res-ponders and to seek overall correlations of OSM with other inflammatory bio-markers.RESULTS Sixteen studies(818 Crohn’s disease and 686 ulcerative colitis patients treated with anti-tumor necrosis factor-based therapies)were included.OSM levels were associated with IBD severity.A meta-analysis found significantly higher OSM levels in non-responders than in responders to therapy[SMD 0.80(0.33,1.27);P=0.001],in non-remitters than in remitters[SMD 0.75(95%CI:0.35 to 1.16);P<0.0001]and in patients with no mucosal healing than in those with mucosal heal-ing[SMD 0.63(0.30,0.95);P<0.0001].Area under receiver operator curve values showed considerable variability between studies but in general higher OSM levels were associated with poor prognosis.OSM had significant correlations with Simple Endoscopic Score of Crohn’s disease[r=0.47(95%CI:0.25 to 0.64);P<0.0001],Mayo Endoscopic Score[r=0.35(95%CI:0.28 to 0.41);P<0.0001],fecal calprotectin[r=0.19(95%CI:0.08 to 0.3);P=0.001],C-reactive protein[r=0.25(95%CI:0.11 to 0.39);P<0.0001],and platelet count[r=0.28(95%CI:0.17 to 0.39);P<0.0001].CONCLUSION OSM is a potential candidate for determining the severity of disease and predicting the outcomes of anti-tumor necrosis factor-based therapies in IBD patients.

非线性M-C强度准则下预应力锚索加固边坡时效稳定性分析M-P法

拓展传统极限平衡方法在复杂条件下边坡稳定性分析中的适用性一直是岩土工程界的研究热点。众所周知,边坡岩土体剪切失效一般服从于非线性强度准则,而传统极限平衡方法仅适用于线性强度准则下边坡稳定性分析。此外,预应力锚索作为一种主动防护措施,可极大地即时提高边坡稳定性而被广泛应用于中、大型边坡工程加固。然而,在应力松弛、蠕变效应以及腐蚀环境影响下预应力锚索加固边坡稳定性时效特征往往被忽视。由此,基于Morgenstern-Price(M-P)法,嵌入非线性Mohr-Coulomb(M-C)强度准则,并融入应力松弛与蠕变效应下锚索预应力损失模型以及腐蚀环境下锚索性能劣化模型,从而,建立非线性强度准则下预应力锚索加固边坡安全系数时程表达式。进一步,为了解决非线性强度准则下隐式嵌套公式难以求解的问题,归零化条间法向力初始值,并应用迭代循环求解策略,在引入循环终止允许误差判别条件后,可实现边坡稳定性理论真实结果的逼近求解。经过后续算例对比分析,验证了所提方法的可行性和合理性,与此同时,还研究了不同预应力损失速率和不同锈蚀环境下预应力锚索加固边坡稳定性的时效变化规律。

NSUN2通过m^(5)C修饰介导系统性红斑狼疮患者中CD4^(+)T细胞的活化

目的:探究mRNA的m^(5)C甲基转移酶NSUN2对系统性红斑狼疮(SLE)患者CD4^(+)T细胞活化的影响。方法:通过慢病毒感染和有限稀释法构建NSUN2稳定敲除的Jurkat细胞单克隆株,Western blot和免疫荧光检测Jurkat细胞中NSUN2的敲除效果,Dot blot检测NSUN2敲除后m^(5)C的修饰水平变化。使用抗人CD3/CD28抗体刺激Jurkat细胞活化,分别在24 h和48 h使用流式细胞术检测Jurkat细胞活化标志物CD69和CD25的表达水平,RT-qPCR检测Jurkat细胞活化后IL-2和TNF-α的转录水平;建立NSUN2^(+/-)小鼠模型,使用磁珠分离CD4^(+)T细胞,通过体外诱导细胞活化,进一步评价NSUN2的敲低对CD4^(+)T细胞活化的影响。使用Arraystar mRNA表观转录组芯片检测NSUN2敲除后Jurkat细胞中基因m^(5)C修饰水平和表达水平,获得受NSUN2调控的m^(5)C修饰的靶基因,利用GO和KEGG富集分析获得NSUN2调控的重要信号通路,结合SLE患者CD4^(+)T细胞中差异的m^(5)C修饰基因集,筛选获得受NSUN2调控的且与SLE疾病相关的靶基因,并进一步利用GO和KEGG等分析NSUN2调控系统性红斑狼疮CD4^(+)T细胞功能的潜在通路。结果:采用CRISPR-Cas9技术,成功获得NSUN2敲除的Jurkat细胞单克隆株,与NSUN2-NC组相比,NSUN2-KO组m^(5)C修饰水平下调,Jurkat细胞的活化标志物CD69和CD25表达水平上调,活化相关细胞因子IL-2和TNF-α表达水平上调(P<0.05);与野生型小鼠相比,NSUN2^(+/-)小鼠Naive CD4^(+)T细胞的活化标志物CD69的表达水平上调。机制上发现,Jurkat细胞中存在受NSUN2调控的基因集,GO和KEGG富集显示这些基因与T细胞活化过程相关。结合SLE患者CD4^(+)T细胞中差异的m^(5)C修饰基因集,筛选获得受NSUN2调控且与SLE疾病相关的靶基因集,GO和KEGG富集分析证实这些基因集与CD4^(+)T细胞功能相关。结论:NSUN2的敲除/敲低促进了Jurkat细胞和小鼠Naive CD4^(+)T细胞的活化,初步筛选出NSUN2调控SLE患者CD4^(+)T细胞活化的靶基因集及其潜在信号通路。

浅析指向核心素养发展的1C3M初中英语课堂评价策略——以人教版八年级(下册)Unit 4 Why don't you talk to your parents?Section A读写课为例

《义务教育英语课程标准(2022年版)》提出了“教学评价应聚焦学生核心素养培养”的新要求。在这一背景下,1C3M初中英语核心素养课堂评价模式应运而生。文章在详细分析这一评价体系的内涵与意义的基础上解析了1C3M评价体系的四大关键要素,并从评价目标、评价原则、评价活动和评价方法四个维度介绍了评价策略的设计与实施,以期为当前英语课堂教学提供理论和实践的新视角。

Assessment of the Recent Hydromorphological Features of Nokoue Lake and Its Channels (South-East Benin)

Based on 2022 and 2023 hydrometric data and satellite images (Sentinel 2022, SPOT 2010), this study aims to present the Nokoué Lake and its channels’ re-cent hydromorphological characteristics. Integrating flow, tributary morphology, and topography data determined specific power values along the axes studied. The values obtained range from 2.69 to 12.92 W/m2 for Ouémé River and 2.46 to 10.99 W/m2 for Sô River. The resulting water erosion on banks and bottoms is of linear, areolar, or gully and claw types. Lake bathymetry varies from -0.5 to -2.6 m (low flow period) and -1 to -4 m;in the Ouémé, Sô, and Totchè rivers, it varies from -5 m to -7 m, reaching -10 m at the Cotonou channel entrance (flood period). Bathymetric profiles reveal varied “U”, “V” and “Intermediate” bottom morphologies, influenced by erosion/sedimentation processes and human activities. The flow facies identified are lentic in the northern tributaries and lotic in the Cotonou and Totchè canals. Spatial analysis identified nine (09) thematic classes. In 2022, the surface area of the water body has increased from 274 km2 at low water to 280 km2 at high water, whereas in 2010 (a recent year of exceptional flooding), the surface area was 270 km2 at low water and 277 km2 at high water. Significant changes in land use are observed between 2010 and 2022. The floodplain area decreased slightly, from 421 km2 in 2010 (year of exceptional flooding) to 419 km2 in 2022. The evolution of land use shows a progressive expansion of the urban environment to the detriment of the natural environment. In the medium to long term, this trend could threaten the hydromorphological balance and even the existence of this important lagoon ecosystem.

Treatment of Vulvovaginal Candidiasis with A Strategy Based on Phototherapy (M.A.C.® Scar Acceleration Method)

Candidiasis, also known as candidiasis vulvovaginitis, is an infection caused by different types of Candida fungi, the most frequent being Candida albicans. The present study reports an effective strategy, which opens new avenues for the treatment of this public health problem. The MAC® Methodology, conventional laser light-emitting (LLLT)/LED) methods are based on the biphasic response demonstrated many times in LLLT research and as with other forms of drugs, a “drug” (irradiation parameters) and a “dose” (irradiation times) and the “Arndt-Schulz Law” is often cited as a suitable model to describe the dose-dependent effects of LLLT. This method uses photopharmaceuticals, cell markers and the use of correct parameters for each case to induce the acceleration of tissue repair. The present study shows a case of a 32-year-old patient diagnosed with recurrent candidiasis 4 years ago. Eighteen sessions were performed (every other day) using a photoactivated component (Methylene blue 1% + Clotrimazole 1%) and LED phototherapy (red, blue and violet) with emission times of 60 - 260 seconds for each applicator, according to the dose recommendations of the scar acceleration method (MAC®). At the sixth treatment session there was a noticeable decrease in the itching sensation reported by the patient. In session 11 she reported feeling a great improvement, indicating that she no longer felt itching in any area after 18 sessions. The present case demonstrates new methodologies to treat common problems in the population that have a positive impact on the quality of life. This methodology has a promising future because it is non-invasive and requires a great biological transformation for inflammatory, fungal and viral control.

“1M3S”护理管理模式对ICU急性心肌梗死患者并发症及不良心血管事件发生率的影响

目的 探讨ICU收治的急性心肌梗死患者应用“1M3S”护理管理模式所取效果,评估对并发症及不良心血管事件发生率产生的影响。方法 随机抽检2022年6月至2023年6月入住于ICU的82例急性心肌梗死患者为研究对象,利用随机数字表法将纳选对象划分为两组,应用常规护理模式的患者命名为对照组,执行“1M3S”护理管理模式的患者设定为观察组,评估两种护理模式应用优势以及干预效果。结果 观察组并发症、不良心血管事件发生率测定结果低于对照组,分别为12.19%、31.71%(P<0.05);各项护理管理质量评分测定结果呈现为观察组均高于对照组(P<0.05);相较于对照组,观察组疾病不确定感均较低(P<0.05)。结论 ICU收治的急性心肌梗死患者护理管理期间应用“1M3S”护理管理模式可以提高整体护理管理效果,在预防并发症以及不良心血管事件方面具有突出效果,有利于减轻疾病不确定感,值得借鉴。

m1A/m5C/m6A/m7G调控基因预测胃癌预后及免疫关联性

目的基于m1A/m5C/m6A/m7G甲基化调控基因建立胃癌预后风险预测模型,并分析该模型与免疫的关联性。方法通过癌症基因组图谱(TCGA)-胃癌数据集筛选表达具有显著差异的m1A/m5C/m6A/m7G调控基因,通过单基因Cox回归分析和LASSO算法构建预后风险评分(risk score,RS)模型,使用Kaplan-Meier(K-M)统计进行RS模型验证,并应用细胞系进行RT-qPCR验证。利用单因素、多因素Cox回归分析建立nomogram模型。使用CIBERSORT算法和estimate包进行免疫关联性分析。结果建立了基于八个甲基化调控基因的预后RS模型,将胃癌患者分为高风险和低风险。这八个基因在胃癌细胞系中高表达(P<0.05)。在TCGA-胃癌训练集和GSE62254-验证集中,患者总生存率(OS)与分组状态之间存在显著相关性(P<0.001)。nomogram生存模型预测的1年(C-index=0.703)、3年(C-index=0.729)和5年(C-index=0.734)生存率与实际生存率的一致性较好。免疫关联性分析表明,与低风险患者组相比,高风险患者组免疫评分和免疫检查点相关基因的表达较高(P<0.05)。结论基于m1A/m5C/m6A/m7G调控基因的预后RS模型可预测胃癌预后并指导个体免疫治疗决策。

Simulating the Dynamics of Bimetallic Clusters Deposited onto a Surface Using Molecular Dynamics

This paper examines the interface development between a single crystalline Ag matrix and core-shell AgnCom nanoclusters that have been deposited with energies varying between 0.25 eV and 1.5 eV per atom using computer modeling techniques. Clusters undergo deformation as a result of the slowing down;they may also become epitaxial with the substrate and maintain their core-shell structure. A detailed analysis of the effects of the cluster-surface interaction is conducted over a realistic size and energy range, and a model is created to show how clusters accumulate. It is discovered that both the silver shells and the cobalt cluster cores exhibit limited epitaxy with the substrate, and that the contact produced is only a few atomic layers thick. The effect is higher for Ag shells than for Co cores, and it is not very energy dependent.

Growth of the Earthworm Millsonia omodeoi and Its Capacity to Accumulate Five Heavy Metals (HM) in Soils along a Toll Highway in Côte d’Ivoire

The roads in correlation with the traffic linked to their existences are at the origin of the emission of numerous polluting substances likely to induce disturbances of the growth and the behavioral changes in the organisms living in their vicinities. The purpose of this study is to analyze the growth and capacity accumulation of a common earthworm species (Millsonia omodeoi) in Cu, Cr, Ni, Pb and Zn in soils along a main road called “Autoroute du Nord” in C?te d’Ivoire. Thus, the earthworms were harvested in soils from a distance of 0 m (just after the sidewalk) to a distance of 200 m from the toll highway and in a control soil sampled in Lamto reserve (C?te d’Ivoire). The study was carried out in the soil laboratory at the ecological station of Lamto reserve. The Ford-Walford technique was used to determine the model and parameters most appropriated for describing the growth of earthworms. A pairwise comparison of the growth parameters was carried out using the Kruskal-Wallis test with the STATISTICA 7.1 software. The heavy metals contained in the cultivated soils and earthworms were detected and quantified using a Scanning Electron Micro-scope (MEB FEG Supra 40 VP Zeiss) and an Atomic Absorption Spectrometer SPECTRA 110 (VARIAN). The capacity accumulation of heavy metals in earthworm was determined by the bioaccumulation factor (BAF) calculation. The results of this study showed that Gompertz is the most appropriated model to describe the growth of M. omodeoi. The life cycle of M. omodeoi shows that this earthworm adopts a K type demographic strategy. Cu is the most accumulated heavy metals in M. omodeoi, when Cr is the least accumulated. Concerning heavy metal content in the earthworms, it decreases while moving away from the pavement. These results highlight a possibility of choice of M. omodeoi as 1) indicators of heavy metals pollution and 2) target of biological organisms for environmental impact studies.

基于GNSS的2023年2月23日塔吉克斯坦M_(S)7.2地震前异常资料变化特征研究

为了进一步探究中强地震发生前GNSS坐标时序中是否存在中短期异常现象,通过分析2023年2月23日塔吉克斯坦M_(S)7.2地震前后中国大陆构造环境监测网络(简称:“陆态网络”)塔什库尔干、布伦口GNSS基准站观测资料的变化特征,发现该地震震前塔什库尔干、布伦口均出现较为明显的GNSS基准站时间序列异常现象,震前EW向存在趋势性W向运动,震后E向加速;震前NS向趋势性S向运动,临震前状态快速改变,布伦口在震后还显示出7.3 mm的EW向永久性形变,研究结果表明GNSS在地震发生短临阶段具有重要的预测意义。与2015年12月7日塔吉克斯坦M S7.4地震进行对比发现,两次M S≥7.0地震对塔什库尔干、布伦口基准站的影响差异较大。2015年12月7日塔吉克斯坦M S7.4地震为左旋走滑,影响方向主要为NE向,而2023年2月23日塔吉克斯坦M_(S)7.2地震为右旋走滑,影响方向主要为SE向。震前基线均有挤压缩短的前兆异常显示。梳理站点异常出现情况,发现异常持续时间越长、异常出现次数越多,发震震级可能越大。

C2M电商助力制造企业数字化升级的机理及路径

随着信息技术及我国经济社会的迅猛发展,互联网由消费互联网走向工业互联网,C2M电商模式脱颖而出,众多品牌制造企业纷纷结合C2M电商,助力企业的数字化升级。在升级机理上,C2M电商将消费者与生产制造企业实现端到端的直接互联,使得消费端到生产端的供应链数字化升级日新月异,纵向上下游节点数据打通共享,横向同类供应商多家接入,按业务不断延展,形成产业网链。品牌制造企业通过C2M电商,从消费端收集消费者的动态需求,到未来潮流产品预测,再到产品研发的数字化、产品的柔性化生产与产品营销数字化,连通并共享产业链上的大数据,为企业的生产经营数据赋能,创新商业模式,形成产业数字生态圈,不断创造新的价值,实现数字化升级。在升级路径上,依次从产品信息充分数字化、实施C2M电商全渠道数字化营销、产品研发设计的数字化、到采购生产销售物流全流程供应链的数字化升级,最终实现生产经营大数据为企业生产经营数据赋能。

儿童支原体肺炎检测中CRP、IgM、IgG、PCT指标的临床意义分析

目的探讨在儿童支原体肺炎检测中C反应蛋白(C-reactive Protein,CRP)、免疫球蛋白指标M(Immunoglobulin M,IgM)、免疫球蛋白指标G(IgG)、降钙素原(Procalcitonin,PCT)指标的临床意义。方法选取2019年11月—2022年4月赣榆区人民医院收治的支原体肺炎患儿120例作为观察组,并在同期体检健康儿童中选取120例作为对照组,均接受CRP、IgM、IgG、PCT等指标检测,根据其检测水平进行分析。结果观察组患儿的CRP为(15.35±3.08)mg/L、PCT为(0.66±0.11)ng/L,比对照组CRP的(4.08±0.72)mg/L、PCT(0.31±0.06)ng/L高,差异有统计学意义(t=39.031、30.599,P均<0.05);观察组中急性期患儿的CRP、PCT指标水平明显高于恢复期患儿指标水平,差异有统计学意义(P均<0.05);观察组患儿的IgM、IgG、IgE水平较对照组高,IgA水平较对照组低,差异有统计学意义(P均<0.05)。结论支原体肺炎患儿接受免疫球蛋白指标、CRP、PCT指标检测,其指标值可良好地反映患儿病情,IgA水平较低,其他指标均升高,因此对以上指标进行密切监测,为支原体肺炎疾病诊断、治疗提供数据参考。