Cedar Pollen and Cedar Pollinosis

Objective To investigate the prevalence of cedar pollinosis in China, and compare Cryptomeria fortunei(Cf) with Cryptomeria japonica (Cj) morphologically. Methods\ An epidemiological survey on nasal allergy was carried out among 1 660 primary and middle school students and 1 620 university students, including questionnaire investigation, nasal inspection by the same doctor and scratch test with the allergen extract of Cj. The pollen of Cf and Cj were observed by optical and electron microscope. The genes of chloroplast of them were analysed. Results ①The total positive rate of cedar pollen scratch test was 4.2%. 55 cases of nasal allergy were confirmed according to the criteria of diagnosis, in which 8 cases showed positive reaction to Cj and only 1 case was hypersentive to it. ②No significant distinction between Cf and Cj was found by optical and electron microscope and no difference in gene analysis was found. Conclusion\ ①Cedar pollinosis does exist in China. It′s low prevbalence is related to the low quantity of cedar pollen.②Cf and Cj are of the same family and genus. ③There may be an increasing tendency of cedar pollinosis in China.\;

Spatial Variations in Particle Size and Magnetite Concentration on Cedar Beach:Implications for Grain-Sorting Processes,Western Lake Erie,Canada

This study examined spatial variations in the concentration,grain size and heavy mineral assemblages on Cedar Beach（Lake Erie,Canada）.Magnetic studies of heavy mineral-enriched,dark-reddish sands present on the beach showed that magnetite（～150μm） is the dominant magnetic mineral.Surficial magnetic susceptibility values defined three zones：a lakeward region close to the water line（Zone 1）,the upper swash zone（Zone 2） and the region landwards of the upper swash zone （Zone 3）.Zone 2 showed the highest bulk and mass susceptibility（κ,χ） and the highest mass percentage of smaller grain-size（250μm） fractions in the bulk sand sample.Susceptibility（i.e.κandχ） values decreased and grain size coarsened from Zone 2 lakewards（into Zone 1） and landwards （into Zone 3）,and correlated with the distribution of the heavy mineral assemblage,most probably reflecting preferential separation of large,less dense particles by waves and currents both along and across the beach.The eroded western section of Cedar Beach showed much higher concentrations of heavy minerals including magnetite,and finer sand grain sizes than the accreting eastern section, suggesting that magnetic techniques could be used as a rapid,cost-effective way of examining erosion along sensitive coastline areas.

基于分布式数据库Cedar的高效工单管理系统设计与实现

随着互联网发展,企业随之转型,积极开展基于互联网的业务.传统业务系统架构基于集中式数据管理系统如MySQL之上,在封闭使用状态向开放使用状态转换的过程中,逐渐在可用性上暴露出弊端,故而不能很好地支持业务拓展规模化、分布式处理的要求.网络业务的开展对工单系统提出了在支持大数据、高并发、高冲突、高可用下保证处理高效性的新需求.在深入分析当前业务特征的基础上,利用分布式数据库Cedar,基于Netty通信框架,以海尔的工单业务为实例,设计并实现了支持工单存储、派单以及工程师抢单业务的高效、可扩展工单管理系统,详述了系统的可靠性和可扩展实现.经实验表明,该工单系统在保证高吞吐和低延迟的同时具有良好的可扩展性和可用性.

Impact of a Low Severity Fire on Soil Organic Carbon and Nitrogen Characteristics in Japanese Cedar Soil, Yamagata Prefecture, Japan

Slash and burn practices are widely used around the globe with different degrees of success which are mostly related to the impact of fire on soil properties. In Japan slash and burn practises, known as Yakihata, have a long history and are still used in Yamagata Prefecture today. The purpose of this study was to determine the impact of a low severity controlled fire underneath Japanese cedar (Cryptomeria japonica) on brown forest soil (Cambisol). Japanese Cedar is the dominant species among plantations in Japan. We measured organic carbon and nitrogen content as well as changes in carbon (δ13C) and nitrogen (δ15N) stable isotope composition in a steep west facing slope under heavy precipitation (~2600 mm/a) and heavy snowfall (~3 to 4 m/a). The accumulation of Ctotal and Ntotal at the bottom of the slopes was remarkably higher at the slash and burned site than in the control forest site. After slash and burn δ15N isotopes in the slope in general became significantly lighter than in the control forest while the δ13C did not show any significant difference between the two sites except at the bottom of the slopes where δ13C was heavier in the forest. The results show that Ctotal and Ntotal values as well as the isotopes ratios of C and N change with decreasing elevation in the forest as well as in the burned site being consistent with leaching and erosion. The changes in soil nitrogen and carbon isotopes at the bottom of the slope appear to be related to the transport of material with different isotopic composition from the upper slope. The effect of the low severity fire (as part of the slash and burn practice) on soil organic carbon and nitrogen movement was enhanced by the steepness of the slopes and the high precipitation of Shonai region.

Spatial Variations in Particle Size,Heavy Mineral Assemblage and Magnetic Concentration of Dark-reddish Sands on Cedar Beach,Western Lake Erie,Ontario,Canada

Environmental magnetic research on beaches and shoreline processes is limited.Therefore,we carried out environmental magnetic studies on the heavy mineral-enriched,dark-reddish sands on Cedar Beach of western Lake Erie(41.68°N,82.40°W).Magnetite has been identified as the dominant magnetic mineral of these sands.This study reveals a spatial variation in concentration of magnetite particles,distribution of

Impacts of Land Cover Changes on Runoff and Sediment in the Cedar Creek Watershed,St.Joseph River,Indiana,United States

The relation between runoff and sediment and land cover is investigated in the Cedar Creek Watershed （CCW）, located in Northeastern Indiana, United States. The major land cover types in this watershed are cultivated land, woodland and pasture /Conservation Reserve Program （CRP）, which account for approximate 90 % of the total area in the region. Moreover, land use was changed tremendously from aooo to 9004, even without regarding the effect of the crop rotation system （corn ＆ soybean）. At least 49 % of land cover types were changed into other types in this period. The land cover types, ranking by changing area from high to low series, are rye, soybean, corn, woodland and pasture/CRP. The CCW is divided into 21 subwatersheds, and soil and water loss in each sub-watershed is computed by using Soil and Water Assessment Tool （SWAT）. The results indicate that the variations in runoff and sediment have positive relation to the area of crops （especially corn and soybean）; sediment is more sensitive to land cover changes than runoff; more heavy rainfall does not always mean more runoff because the combination of different land cover types always modify runoff coefficient; and rye, soybean and corn are the key land cover types, which affected the variation in runoff and sediment in the CCW.

Microwave Assisted Acid Digestion of Biomorphic Ceramic Obtained from Cedar Wood Infiltrated with ZrO2

This work proposes the use of experimental design for optimization of microwave-assisted digestion of bio- morphic ZrO2-ceramic. Cedar wood is used as template and it was infiltrated with ZrO2 via sol-gel process. XPS, SEM and XRD have been used to verify the effectiveness of the synthesis. The effects of different combination of acids in the digestion of this sample have been optimized taking as response the concentra- tion of several metallic ions measured by ICP-MS.

Estimation of Carbon Sequestration;Using Allometric Equations;in Azrou Cedar Forests (Cedrus atlantica Manetti) in the Central Middle Atlas of Morocco under Climate Change

The topic of carbon sequestration in forest ecosystems has recently taken a lot of attention due to concerns about global climate change. As a spontaneous species of the Central Middle Atlas, the Atlas Cedar was the subject of our study. Thus, a total of 30 sample trees were subjected to the weight measurements for the estimation of biomass and organic carbon stock in a logging lot in the Azrou forest. The amount of sequestered carbon was then extrapolated in all stand forests studied from the developed carbomass models. The results obtained show that the largest allocation of carbon stock (93%) is in the stem, followed by branches (5%) and foliage (2%). The average carbon storage in this cedar forest is 99.42 tC/ha (aboveground and belowground), or 364.58 t/ha of CO2, a value significantly higher than that found in other Moroccan forest ecosystems.

Study of Atlas Cedar Growth (<i>Cedrus atlantica</i>Manetti) in El M’sid Mountains (East Algeria): Productivity and Growth According to Planting Methods

The Atlas cedar (Cedrus atlantica) is one of the more valuable reforestation species in the Mediterranean areas. But this species suffers from rainfall limitation and climate changes, particularly in its originated area, North Africa. Therefore, any knowledge about the plantation practices to improve the tree water availability and the reforestation success has great importance. The current study has been undertaken in this view, i.e. to compare the growth of cedar plots located in El M’Sid Mountains, Souk Ahras department (700 km east of Algiers), according to different planting methods. The radial growth and the productivity have been measured on a cedar plot with a total surface of 165 ha. 150 ha has been planted in 1970 on hillside ditches, and 15 ha of which the majority is planted in a simple hole and some bouquets on terraces, both are originated from a complementary reforestation achieved during 1980. The results show that most of the trees planted in 1970 reach a height ranging between 10 and 17 m and a diameter between 23 and 44 cm. Even some trees were 20 m high with diameter of 65 cm. The productivity fluctuates between 3 and 8 m3/ha/year, values close to the one of natural native plots. Trees planted in 1980 reach a height ranging between 5. 5 to 7 m, and diameter between 11.5 to 23 cm. The radial growth improves that the hillside ditches help the roots anchoring and trees growth during the first season after plantation. These results indicate that the cedar tree can be used with success in areas outside the natural cedar forest presence, and that appropriate planting techniques can compensate in part the lower rainfall occurring in these chosen regeneration areas.

超级计算机设计的折衷考虑与CEDAR系统

一、引言计算机设计人员常常必须在所期望获得的体系结构特点与实际用来制造一个系统的硬件之间进行折衷。在超级计算机的设计中,由于希望获得高速度,而这样又容易加大成本,因而这些折衷就更加重要了。今天,设计人员在以每秒1亿多次算术运算的峰值速度执行的系统上工作,用户费用高达1千多万美元。需要超级计算机设计人员另外考虑的是,在过去,超级计算机为多数用户提供的性能只是其峰值性能的一小部分(例如5％～10％)。通过大量计算获得高效率是当今超级计算机系统还未达到的一个目标。在八十年代初的五年中,由于种种限制,人们纷纷转向多处理机超级计算机的研制。单处理机超级计算机具有专门的向量指令,它可利用在科学计算中出现的大量向量数据。这些处理机依赖流水算术运算。

Non-Contact Velocity Measurement of Japanese Cedar Columns Using Air-Coupled Ultrasonics

The ultrasonic wave velocities of Japanese cedar columns were measured using a non-contact method. An air-coupled ultrasonic wave was propagated through the axial and lateral directions of wood. The velocities in the axial direction (VL) showed the minimum values around the pith. The averaged VL increased from 3600 m/s towards the outside of measurement area and attained the maximum values (=4010 m/s). The velocities in the lateral direction (VRT ) showed no tendency among measurement points. The averaged VRT was 1450 m/s. The velocities obtained using the non-contact method showed a significant positive relationship with those obtained using the contact method. The averaged ratio of VL to VRT was measured to be approximately 2.2 to 2.8. These ratios were in agreement with those from a contact method. These findings suggest that it is possible to measure the velocity in Japanese cedar columns with the non-contact method by using air-coupled ultrasonics.

Development and evaluation of a quadruple real-time fluorescence-based quantitative reverse transcription polymerase chain reaction assay for detecting Langya, Mojiang, Nipah, and Cedar viruses

The emerging viruses within the genus Henipavirus in the family Paramyxoviridae pose a great threat to public biosafety.To develop a quadruple real-time fluorescence-based quantitative reverse transcription polymerase chain reaction(qRT-PCR)assay is pivotal for the early warning of the potential of zoonotic infectious diseases.Specific primers and probes were designed for the relatively conserved regions based on whole genome sequences of Langya virus(LayV),Mojiang virus(MojV),Nipah virus(NiV),and Cedar virus(CedV),followed by the establishment of a quadruple real-time fluorescence-based qRT-PCR detection method.No cross-reactivity was observed with other viral nucleic acids.The optimal linear detection range for LayV,MojV,NiV,and CedV was 10^(1)-10^(8)copies/μL,and the lower limit of detection was 10 copies/μL.Three different DNA concentrations of LayV,MojV,NiV,and CedV(10^(4),10^(5),and 10^(6)copies/μL)were tested 14 times,achieving good repeatability.The standard deviation of the cycle threshold values for each concentration was<0.5 and the coefficient of variation was<3%.Furthermore,the amplification efficiency of quadruple real-time fluorescence-based qRT-PCR was>90%,and the correlation coefficient was>0.99.The established quadru-ple real-time fluorescence-based qRT-PCR assay for the detection of LayV,MojV,NiV,and CedV exhibits good sensitivity,specificity,and repeatability.Therefore,it can be used to detect Henipavirus and other related clinical specimens.

Journal Article Moso bamboo and Japanese cedar seedlings differently affected soil N_(2)O emissions

Moso bamboo expansions into Japanese cedar forests are common.The expansion effects on soil nitrous oxide(N_(2)O)emissions have not been thoroughly understood,and the underlying microbial mechanisms remain unclear.We studied bacterial and fungal contribution to soil N_(2)O emissions under moso bamboo or Japanese cedar by applying bacterial or fungal inhibitors using streptomycin and iprodione,respectively.Soil N_(2)O emissions were measured and the relative contribution of bacteria and fungi to soil N_(2)O emissions was calculated.N_(2)O emission from soil with moso bamboo was significantly higher than under Japanese cedar.Compared with control,bacterial or fungal inhibitor or their combination decreased N_(2)O emissions,indicating substantial contribution of microbial activities to N_(2)O emissions.However,the relative contribution of bacteria and fungi to N_(2)O emissions was not affected by plants.Soil organic carbon,total and ammonium nitrogen were lower in soil under moso bamboo than Japanese cedar,suggesting faster microbial decomposition under moso bamboo.Fungal inhibitor and plants interactively affected soil pH,total phosphorus and ammonium nitrogen,while bacterial inhibitor and plants interactively affected total nitrogen,indicating substantial dependence of effects by microbial communities on plant species.Moso bamboo and Japanese cedar differed in their effects on soil N_(2)O emissions with higher emissions under moso bamboo.Stimulation of N_(2)O emission under moso bamboo might occur due to higher nitrogen mineralization and subsequent denitrification induced by high root exudation.These results highlight the need to consider the effect of species shifts on N_(2)O emissions in forests.

早期石膏托外固定联合手法复位杉树皮夹板外固定在老年桡骨远端骨折患者中的疗效观察

目的分析早期石膏托外固定联合手法复位杉树皮夹板外固定在老年桡骨远端骨折患者中的应用效果。方法选取2023年1月—2023年12月江苏省苏北人民医院收治的68例老年桡骨远端骨折患者为研究对象,根据随机数字表法将其分为对照组和观察组,每组34例。对照组采用手法复位杉树皮夹板外固定治疗,观察组采用早期石膏托外固定联合手法复位杉树皮夹板外固定治疗。比较两组患者的腕关节功能优良率、疼痛程度、腕关节功能及腕关节活动度。结果观察组腕关节功能优良率为94.12%,高于对照组的70.59%,差异有统计学意义(P<0.05)。治疗4周后,观察组疼痛视觉模拟评分为(1.29±0.27)分,低于对照组的(2.13±0.56)分,差异有统计学意义(P<0.05)。治疗12周后,Gartland-Werley评分为(7.85±1.62)分,低于对照组的(10.84±2.03)分,尺偏角为(16.32±3.35)°,掌倾角为(9.89±1.56)°,均大于对照组的(13.19±3.12)°、(7.43±1.35)°,组间差异有统计学意义(P<0.05);观察组腕关节掌屈度、背伸度、旋后度均大于对照组,差异有统计学意义(P<0.05)。结论早期石膏托外固定联合手法复位杉树皮夹板外固定治疗在老年桡骨远端骨折患者中的应用效果显著,能提高腕关节功能的恢复质量,减轻疼痛。

《雪松后的房子》中的动物隐喻与种族书写

《雪松后的房子》故事背景取自切斯纳特幼时的居住场所,通常被认为是他对童年的回忆记述,并无奥义。但事实上,“雪松后的房子”这一意象状似原始动物巢穴,暗示了“人即动物”这一与当时的主流话语相悖的命题。切斯纳特藉由这一独特的场景模糊小说主旨,促使读者去探寻“雪松后的房子”的深层寓意。此外,小说里精心编排的动物隐喻隐晦地揭示了“物种歧视”与“种族歧视”之间的纵深关联,并深刻诠释了人性与动物性之间互相依存的关系。该小说在抨击种族主义制度的同时,也成为西方动物解放运动的先声。

泻火解毒止痛汤联合复方黄柏液涂剂在肛周脓肿根治术后的应用效果

目的:探讨泻火解毒止痛汤联合复方黄柏液涂剂在肛周脓肿根治术后的应用效果。方法:选取2021年6月—2023年6月唐山市中医医院收治的104例肛周脓肿患者,患者均进行肛周脓肿根治术治疗,术后采用随机数字法分为两组,对照组(35例)采用复方黄柏液涂剂治疗,联合组(34例)采用泻火解毒止痛汤联合复方黄柏液涂剂治疗。治疗10 d后,评估两组临床疗效、中医症候积分、炎症因子水平及安全性。结果:联合组总有效率高于对照组(97.05%vs 74.29%,P<0.05)。治疗后,联合组中医症候积分包括灼热疼痛、肉腐成脓、全身发热、舌红苔黄均低于对照组[(1.65±0.44)分,(1.78±0.46)分,(1.83±0.42)分,(1.90±0.47)分vs(2.05±0.51)分,(2.18±0.55)分,(2.32±0.57)分,(2.49±0.46)分](P<0.05)。治疗后,联合组炎症因子白细胞介素-17A(IL-17A)、前列腺素E2(PGE2)、CXC趋化因子配体13(CXCL13)水平均低于对照组[(43.31±5.94)ng/mL,(19.48±3.41)ng/m L,(71.43±8.14)ng/mL vs(51.25±6.28)ng/mL,(25.63±4.11)ng/mL,(82.12±9.02)ng/mL](P<0.05)。两组患者不良反应发生率,无统计学差异(14.71%vs8.57%,P>0.05)。结论:泻火解毒止痛汤联合复方黄柏液涂剂在肛周脓肿根治术后有良好应用效果,可减轻患者主要中医症候,降低炎症因子水平。

国内外数字资源长期保存研究现状与进展

本文首先对数字资源长期保存国际会议(IPRES)以及国外具有代表性的启动项目进行简要介绍,进而分析我国数字资源长期保存的研究现状,通过比较国内外研究现状及进展情况,找出我国与国外的差距,并提出我国数字资源长期保存的几点建议。

关于数字信息长期保存的元数据

在简要介绍数字信息长期保存体系框架OAIS的基础上 ,介绍了CEDARS、PANDORA/NLA。

消肿止痛汤熏洗坐浴联合复方黄柏液涂剂治疗痔疮术后肛缘水肿的临床效果

目的以痔疮术后肛缘水肿患者作为观察对象,以消肿止痛汤熏洗坐浴联合复方黄柏液涂剂作为治疗方法,就观察对象采用上述治疗方法的临床效果进行分析和探讨。方法选取2020年1月至2022年12月龙岩市第二医院收治的90例痔疮术后肛缘水肿患者,通过随机数字表法将观察对象均匀分为两组,分组后分别命名为对照组、观察组,各组的患者例数均为45例。对照组采用高锰酸钾溶液坐浴联合地奥司明片治疗,观察组采用消肿止痛汤熏洗坐浴联合复方黄柏液涂剂治疗,对比两组的临床总有效率、治疗前后的伤口肉芽组织生长评分、伤口分泌物评分、伤口水肿程度评分及不良反应发生率。结果在临床总有效率的比较上,与对照组相比,观察组较高(P<0.05)。治疗后,在伤口肉芽组织生长评分、伤口分泌物评分、伤口水肿程度评分的比较上,观察组均低于对照组(P<0.05)。在不良反应发生率的比较上,与对照组相比,观察组较低(P<0.05)。结论对于痔疮术后肛缘水肿患者而言,将消肿止痛汤熏洗坐浴联合复方黄柏液涂剂作为治疗方案可获得较为理想的治疗效果,不仅可以有效促进肉芽组织的生长,减少伤口分泌物,减轻水肿程度,还可以降低不良反应的发生风险,提高治疗安全性。