Indoor Surveillance of Airborne Fungi Contaminating Intensive Care Units and Operation Rooms in Assiut University Hospitals, Egypt

Mycoflora of atmospheric air and dust samples collected from air conditioning systems in 12 of each I.C.U. （intensive care units） and O.R. （operation rooms） were tested using settle and dilution plate methods on four types of agar media and incubated at 25℃. Forty-five fungal species representing 23 genera were isolated and identified. The most prevalent genera recorded were Cladosporium, Aspergillus, Penicillium and Fusarium. The total colony forming units of airborne fungi recovered in I.C.U. and O.R. ranged between 31.13-49.61 colonies/m3 on the four types of media usedl The fungal total catch of the dust samples collected from the air conditioning system filters in I.C.U. and O.R. were ranged from 65.5-170 colonies/mg dust. Since, the interest to replace synthetic xenobiotics by natural compounds with low environmental persistence and biodegradable to control such airborne fungal contaminants is needed. In this respect, essential oils showed to possess a broad spectrum of antifungal activity. Fungal static ability of six oils was tested on 30 different fungal isolates. Vapors of common thyme oil exhibited the strongest inhibitory effects on the tested isolates, whereas the headspace vapors of blue gum and ginger had no inhibitory effects on the tested fungal isolates. These data revealed that the air conditioning systems may be an important source of contamination in I.C.U. and O.R. of Assiut university hospitals. Thus, patients may be in risk of being exposed to contaminated atmospheric air by opportunistic fungi and the use of essential oils as an alternative option to control hospital wards from fungal contaminants needs further studies.

A Comparison Analysis Between Rooms and Home is So Sad

There are similarities and differences in the construction of the two poems:Charlotte Mew’s"Rooms"and Philip Larkin’s"Home is so Sad(HISS)".Both convey a sense of regret and loss through the portrayal of abandoned rooms.However,"Rooms"highlights the despair upon the withering away of life and the slow,painful approach of death,while"HISS"expresses the pain upon the loss of loved ones.The rooms in each poem may have different roles in the lives of their owners,but in each case,they form a significant linkage of the past and present,and ultimately symbolise the abandonment of human heart itself.

根植于生活的艺术观及其对陈设设计的影响——以意大利米兰科莫街十号3 Rooms精品酒店为例

本文从“分工产生效能”的理论视角重新理解建筑学演变的肌理并以此为基础深入阐述陈设设计与建筑设计之间的关系。以威尼斯和米兰为例,解读意大利根植于生活的艺术观,并通过米兰科莫街十号3 Rooms精品酒店为例,介绍其室内陈设设计的细节,阐释艺术观对陈设设计的影响。

Surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms at the end of mining stage

Two case studies were conducted in the Shennan mining area of Shaanxi Province,China to evaluate the surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms· These studies mainly monitored the surrounding rock deformation and coal pillar stress in the recovery rooms of the N1206 panel of 2-2 coal seam at Ningtiaota Coal Mine and the 15205 panel of 5-2 coal seam at Hongliulin Coal Mine.The monitoring results showed that the surrounding rock deformation of the main recovery room and the coal pillar stress in the N1206 and 15205 panels began to increase significantly when the face was 36 m and 42 m away from the terminal line,respectively.After the face entered the main recovery room,the maximum roof-to-floor convergence in the N1206 and 15205 panels was 348.03 mm and 771.24 mm,respectively,and the coal pillar stresses increased more than 5 MPa and 7 MPa,respectively.In addition,analysis of the periodic weighting data showed that the main roof break position of the N1206 and 15205 panels after the longwall face entered the main recovery room was-3.8 m and-8.2 m,respectively.This research shows that when the main roof breaks above the coal pillar,the surrounding rock deformation of the main recovery room and the coal pillar stress increase sharply.The last weighting is the key factor affecting the stability of the main recovery room and the coal pillar;main roof breaks at disadvantageous positions are the main cause of the support crushing accidents.

Application of hybrid operating rooms for treating spinal dural arteriovenous fistula

BACKGROUND A hybrid operating room(hybrid-OR)is a surgical space that combines a conventional operating room with advanced medical imaging devices.AIM To explore and summarize the technical features and effectiveness of the application of a hybrid-OR in dealing with spinal dural arteriovenous fistulas(SDAVFs).METHODS Eleven patients with SDAVFs were treated with the use of a hybrid-OR at the Department of Neurosurgery of our hospital between January 2015 and December 2018.The dual-marker localization technique was used in the hybrid-OR to locate the SDAVFs and skin incision,and the interoperative digital subtraction angiography(DSA)technique was used before and after microsurgical ligation of the fistulae in the hybrid-OR to verify the accuracy of obliteration.The patients were followed for an average of 2 years after the operation,and the preoperative American Spinal Cord Injury Association(ASIA)score and postoperative ASIA score at 6 mo after the operation were compared.RESULTS The location and skin incision of the SDAVFs were accurately obtained by using the dual-marker localization technique in the hybrid-OR in all patients,and there were no cases that required expansion of the range of the bone window in order to expose the lesions.Intraoperative error obliteration occurred and was identified in two patients by using the intraoperative DSA technique;therefore,the findings provided by the intraoperative DSA system significantly changed the surgical procedure in these two patients.With the assistance of the hybrid-OR,the feeding artery was correctly ligated in all cases,and the intraoperative error obliteration rate decreased from 18.2%(2/11)to 0%.All 11 patients were followed for an average of 2 years.The ASIA score at 6 mo after the operation was significantly improved compared with the preoperative ASIA score,and there were no patients with late recurrence during the follow-up.CONCLUSION Compared with intra-arterial embolization for the treatment of SDAVFs,hybrid-ORs can solve the problem of a higher incidence of initial failure and late recurrence.Compared with direct occlusion of SDAVFs in microsurgery,hybrid-ORs can take advantage of the intraoperative DSA system for locating the shunt and verifying the obliteration of fistulae in order to reduce the error obliteration rate.At this point,our experience suggests that the safety and ease of use make hybrid-ORs combined with microsurgery and intraoperative DSA systems an attractive modality for dealing with SDAVFs.

Characterization of predominant bacteria isolates from clean rooms in a pharmaceutical production unit

Aims: To screen for the predominant bacteria strains distributed in clean rooms and to analyze their phylogenetic relationships. Methods and Results: The bacteria distributed in air, surfaces and personnel in clean rooms were routinely moni-tored using agar plates. Five isolates frequently isolated from the clean rooms of an aseptic pharmaceutical production workshop were selected based on their colony and cell morphology characteristics. Their physiological and biochemical properties, as well as partial 16S rDNA sequences, were analyzed. Results showed that all the five isolates belong to Gram positive bacteria, of which three were Staphylococcus, one Microbacterium and one Bacillus species. Sensitivity tests for these bacteria isolates to 3 disin-fectants showed that isolate F03 was obtuse, and had low susceptivity to UV irradiation, while isolates F02, F01 and F04 were not sensitive to phenol treatment. Isolates F04, F01 and F05 were resistant to chlorhexidine gluconate. Conclusion: Bacteria widely distributed in clean rooms are mainly a group of Gram positive strains, showing high resistance to selected disinfectants. Sig-nificance and impact of the study: Clean rooms are essential in aseptic pharmaceutical and food production. Screening bacteria isolates and identifying them is part of good manufacturing practices, and will aid in finding a more effective disinfection method.

Fault Tree Analysis of Fire and Explosion Accidents for Dual Fuel （Diesel/Natural Gas） Ship Engine Rooms

In recent years, China's increased interest in environmental protection has led to a promotion of energy-efficient dual fuel(diesel/natural gas) ships in Chinese inland rivers. A natural gas as ship fuel may pose dangers of fire and explosion if a gas leak occurs. If explosions or fires occur in the engine rooms of a ship, heavy damage and losses will be incurred. In this paper, a fault tree model is presented that considers both fires and explosions in a dual fuel ship; in this model, dual fuel engine rooms are the top events. All the basic events along with the minimum cut sets are obtained through the analysis.The primary factors that affect accidents involving fires and explosions are determined by calculating the degree of structure importance of the basic events.According to these results, corresponding measures are proposed to ensure and improve the safety and reliability of Chinese inland dual fuel ships.

Application of hybrid operating rooms for clipping large or giant intracranial carotid-ophthalmic aneurysms

BACKGROUND A hybrid operating room(Hybrid-OR)is a surgical theatre that combines a conventional operating room with advanced medical imaging devices.There are still plenty of limitations when endovascular treatment or microsurgical treatment is used individually to treat large or giant carotid-ophthalmic aneurysms.AIM To explore and summarize the technical features and effectiveness of the application of a Hybrid-OR in managing major intracranial carotid-ophthalmic aneurysms.METHODS The Department of Neurosurgery treated 12 cases of large or giant intracranial carotid-ophthalmic aneurysms between March 2013 and December 2019 in a Hybrid-OR.All cases were treated with clipping and parent vessel reconstruction.RESULTS With the assistance of the Hybrid-OR,the rate of incomplete intraoperative aneurysm clipping decreased from 25%(3/12)to 0%,while the rate of vessel stenosis decreased from 16.7%(2/12)to 8.35%(1/12).In terms of thromboembolic events,ischemic infarction complication occurred in only one patient,and none of the patients experienced embolic infarction complications.All 12 patients were followed for an average of 3 years,and no aneurysms recurred.The postoperative recovery was evaluated with the modified Rankin Scale(mRS):11 patients showed no symptoms(mRS=0),1 patient showed slight disability(mRS 1-2),and none of the patients had severe disability(mRS=5)or died(mRS=6).CONCLUSION The Hybrid-OR provides new ideas for the surgical clipping of large or giant intracranial carotid-ophthalmic aneurysms and decreases the rate of intraoperative vessel stenosis and unsuccessful clipping.

PRELIMINARY STUDY OF INDOOR FEATURES OF TEMPERATURE AND HUMIDITY FOR ROOMS FACING NORTH-SOUTH IN WINTER IN A LOW-LATITUDE PLATEAU CITY

Analyzing observations of wintertime air temperature in both indoor and outdoor surroundings in Kunming, a city lying in low latitudes, characteristics of temperature and humidity have been studied for the interior of rooms facing north-south under different weather conditions. Significant warming effect has been identified in terms of lowest and daily-mean indoor temperature in the area of Kunming. The heating amplitude ranges from 7.7C to 10.0C and from 4.6C to 5.8C for the interior part of rooms facing the south and from 4.6C to 7.0C and from 1.3C to 4.4C for the interior part of rooms facing the north, respectively for the two elements. The highest air temperature is higher indoor than outdoor for rooms facing the south, but otherwise is usually true for rooms facing the north. Additional findings point out that buildings not only help maintain relatively warm indoor temperature but delay its variation. The diurnal cycle of temperature indoor is smaller and ranges by 40% ~ 48% for south-facing rooms, and by 20% ~ 30% for north-facing rooms, than outdoor, and the highest temperature is about 2 hours late inside the room than outside. It shows how inertly indoor temperature varies. The work also finds that relative humidity is less indoor in southward rooms than in northward ones and difference is the largest on fine days but the smallest when it is overcast. For the diurnal variation, the indoor relative humidity is large at nighttime with small amplitude but small during daytime with large amplitude. The above-presented results can be served as scientific foundation for more research on climate in low-latitude cities and rational design of urban architectures.

Cleaning Technology of Operating Rooms in Hospitals

This paper is based on a literature review of foreign research regarding the relationship between： SSI （surgical-site infection） and operating room cleaning ventilation, the change of cleanroom technical factors of ventilation, and air conditioning in operating rooms. The differences between foreign codes and Chinese codes on cleaning and the air conditioning index of operating rooms are discussed. The historic background of the founding of the current Chinese clean operating room codes was analyzed. The author appealed to insiders for awareness and concentration on international medical research results involved in cleaning and air conditioning techniques of operating rooms. The current domestic codes should be modified based on the real situation of China. Therefore, the development of medical facilities can be fulfilled.

Prediction of sound flanking transmission through two adjacent rooms within a residence building

Flanking transmission has significant effects on the overall sound insulation of two adjacent rooms within a residence building. This study investigates the mechanism of the sound flanking transmission by dividing it into several subsystems with the statistical energy analysis method. The sound energy equations of these subsystems are obtained first, and then,the sound transmissions on each flanking path are predicted and the dominant sound transmission path is determined by solving these equations and calculating the total loss factors of the subsystems and coupling loss factors between subsystems. With respect to a masonry building with heavy-weight homogeneous structure, the results show that：（1） the flanking transmission paths instead of the separating wall may become the dominant ones at low frequencies;（2） all sound transmissions on the flanking paths tend to be consistent at medium and high frequencies, so the sound insulation between two adjacent rooms depends on the direct path of the separating wall;（3） heavy-weight separating walls can be used to reduce the frequency range of the flanking transmission.

Do Students Need Special Rooms to Release Negative Emotions?

Before this year’s national college entrance examination,a middle school in Zhenjiang,a city of east China’s Jiangsu Province,established a room for students to take out their negative emotions,such ass tress,sorrow and anxiety,to enable a better frame of mind when sitting exams.

米兰设计之旅 米兰8 ROOMS展和VELASCA塔

在8ROOM展厅中,展示了在书本上种植的麦子,以及如地毯般的植物。在米兰的时装店里,我也见到了类似的设计,整面墙体都是绿色植物,配合时尚的服装,表现了人与自然的和谐。另外在米兰新会展中心举办的设计展上,此类设计也比比皆是。

米兰设计之旅 米兰8 ROOMS展 预言设计的方向

这次米兰之行,8ROOMS展是一定要看的,更何况它就在大名鼎鼎的DUOMO广场上。早上吃完难以下咽的早餐——ZEFIRO宾馆提供的面包夹生火腿、冰凉的牛奶泡麦片,却要七欧元。感谢一位印度男士,他给我详细的说明了路线以及如何买票。九点钟,到了米兰大教堂广场,出奇地安静,因为意大利的上班时间最早九点半。

Experimental measurements of surgical microenvironments in two operating rooms with laminar airflow and mixing ventilation systems

At present,laminar airflow(LAF)systems and mixing ventilation(MV)systems are two commonly used ventila-tion solutions for operating rooms(ORs)to ensure the required indoor air quality.However,recent studies have shown that there is little difference in the prevalence of surgical site infection(SSI)for the LAF systems and MV systems.The objective of this study was to compare the performance of an LAF system with an MV system in ORs at St.Olavs hospital,Norway.In this study,all the experimental measurements were conducted in real ORs with LAF and MV systems.This study found that the air velocity above the surgical incision is approximately two times higher in the OR with LAF than that in the OR with MV.The use of surgical lamps and different airflow patterns may contribute to the different surgical microenvironment of ORs with LAF and MV.

The role of isolation rooms, facemasks and intensified hand hygiene in the prevention of nosocomial COVID-19 transmission in a pulmonary clinical setting

From December 25,2019 to January 31,2020,33 cases of the coronavirus disease 2019(COVID-19)were identified in the Department of Respiratory and Critical Care Medicine of Zhongnan Hospital of Wuhan University,China,yet none of the affiliated HCWs was infected.Here we analyzed the infection control measures used in three different departments in the Zhongnan Hospital of Wuhan University and correlated the measures with the corresponding infection data of HCWs affiliated with these departments.We found that three infection control measures,namely the isolation of the presumed positive patients,the use of facemasks and intensified hand hygiene play important roles in preventing nosocomial transmission of COVID-19.

Exploring the spatial arrangement of patient rooms for minimum nurse travel m hospital nursing units in Korea

With in creasing dema nds on medical care services,one of the trends is the mixed patient room arrangement of single/double-bed and multi-bed rooms in a nursing unit on the same floor.This influences nurse-to-patient assignment and often causes an unbalanced workload and longer travel distances for nurses.The objective of this study was to investigate how floor configuration and room density influence nurse travel in the hospitafs medical surgical urdts in Korea.This study presented a novel approach to measure nurse travel distances in eight existingn ursing units.The agent-based simulation was con ducted to model nurses'walking trails,and the distanee of one nurse travel to assigned patient rooms was measured for each nurse.With revisions in the spatial arrangement of patient rooms,locating multibed rooms near the nurse station,symmetric room layout centering the nurse station,and planning both single/double-bed and multi-bed rooms on one side of corridors,nurse travel distanee decreased more than 15%.This study contributed to the knowledge of agent-based simulation as an evaluation framework for spatial analysis.Apart from application to Korea,these results are particularly of interest in countries where private patient rooms are not commonly economically feasible.

基于Room的持久存储的设计与优化

Room库作为一种强大的数据库轻量级持久化框架,广泛应用于Android应用的持久存储设计。文章介绍了Room库的核心架构和组件,提出了Room性能优化的策略,以提高数据库操作的效率和响应性,对构建高质量、高性能的Android应用程序有一定的指导意义。

Youth’s Role in Peace Building:A Case Study of Gadarif State

This study in Gadarif State,Sudan,analyzes the crucial role of youth in conflict resolution and peace building efforts amidst the ongoing crisis.Findings reveal that youth,facing economic,environmental,and security challenges,actively engage in peacemaking through initiatives,emergency rooms,and cultural programs,contributing to social cohesion and combatting hate speech.Despite their willingness to build peace,they encounter obstacles like the lack of training programs,limited support,and marginalization in policy-making processes.Recommendations emphasize the necessity of empowering youth through training programs,enhancing government support,and addressing negative perceptions from older generations towards youth contributions.Conclusively,prioritizing youth issues and fostering their participation in peace building initiatives are essential for sustainable peace and social harmony in Gadarif State.

Room Temperature Synthesis of Vertically Aligned Amorphous Ultrathin NiCo-LDH Nanosheets Bifunctional Flexible Supercapacitor Electrodes

Developing a simple scalable method to fabricate electrodes with high capacity and wide voltage range is desired for the real use of electrochemical supercapacitors.Herein,we synthesized amorphous NiCo-LDH nanosheets vertically aligned on activated carbon cloth substrate,which was in situ transformed from Co-metal-organic framework materials nano-columns by a simple ion exchange process at room temperature.Due to the amorphous and vertically aligned ultrathin structure of NiCo-LDH,the NiCo-LDH/activated carbon cloth composites present high areal capacities of 3770 and 1480 mF cm^(-2)as cathode and anode at 2 mA cm^(-2),and 79.5%and 80%capacity have been preserved at 50 mA cm^(-2).In the meantime,they all showed excellent cycling performance with negligible change after>10000 cycles.By fabricating them into an asymmetric supercapacitor,the device achieves high energy densities(5.61 mWh cm^(-2)and 0.352 mW cm^(-3)).This work provides an innovative strategy for simplifying the design of supercapacitors as well as providing a new understanding of improving the rate capabilities/cycling stability of NiCo-LDH materials.