To thoroughly understand market opportunity of freeze-dried facial mask and deeply get insight of consumers’usage behavior and needs,evaluate sensory feelings of 10 screened commercial freeze-dried facial mask produc...To thoroughly understand market opportunity of freeze-dried facial mask and deeply get insight of consumers’usage behavior and needs,evaluate sensory feelings of 10 screened commercial freeze-dried facial mask products,group test products according to the differences of sensory attributions via Principal Component Analysis(PCA)and Agglomerative Hierarchical Clustering(AHC),pick up the representative products.Freeze-dried facial mask users evaluate satisfaction degree of picked up products and participate survey of usage behavior/cognition.Analyze consumer data by AHC to get consumer segmentations and their profile.The test results show that,sensory data and consumer data,which is from consumers test of screened representative products by performing PCA and AHC on sensory data,can be verified mutually.It is helpful to understand the needs of consumer segmentations and reason to buy by combining sensory data and consumer test.展开更多
The outbreak of coronavirus has led to an increase in the demand for facemasks globally. Unavailability of appropriate polypropylene non-woven fabrics face masks as a result of inadequate supply to satisfy the growing...The outbreak of coronavirus has led to an increase in the demand for facemasks globally. Unavailability of appropriate polypropylene non-woven fabrics face masks as a result of inadequate supply to satisfy the growing population has brought about the manufacturing of locally fabrics masks to augment or substitute standard medical class facemasks. The study aims at analyzing airflow of these locally manufactured fabrics to determine possible means of transmitting the virus as well as establish comfort of the user of these masks. Standard polypropylene non-woven, woven and knitted fabrics were considered for the study. Air permeability test was conducted on these fabrics using Frazier Air permeability tester. Depending on the property significant variation in the textile fabrics, polypropylene non-woven is widely accepted for facial masks. Nevertheless, this study illustrates that woven and knitted fabrics have more open structures, which allow a high rate of air penetration and so may require two or three layers to prevent antimicrobial or antiviral potential.展开更多
The explosive demands for facial masks as vital personal protection equipment(PPE)in the wake of Covid-19 have challenged many industries and enterprises in technology and capacity,and the piezoelectric ceramic(PZT)tr...The explosive demands for facial masks as vital personal protection equipment(PPE)in the wake of Covid-19 have challenged many industries and enterprises in technology and capacity,and the piezoelectric ceramic(PZT)transducers for the production of facial masks in the welding process are in heavy demand.In the earlier days of the epidemic,the supply of ceramic transducers cannot meet its increasing demands,and efforts in materials,development,and production are mobilized to provide the transducers to mask producers for quick production.The simplest solution is presented with the employment of Rayleigh-Ritz method for the vibration analysis,then different materials can be selected to achieve the required frequency and energy standards.The fully tailored method and results can be utilized by the engineers for quick development of the PZT transducers to perform precise function in welding.展开更多
An equipment test and sensory evaluation were conducted to identify the compatibility and sensory characteristics of HEC in facial masks. These results were then compared to xanthan gum usage. The equipment test resul...An equipment test and sensory evaluation were conducted to identify the compatibility and sensory characteristics of HEC in facial masks. These results were then compared to xanthan gum usage. The equipment test results showed that HEC promoted proper tensile capacity in masks which are made from strong structured fabrics such as medium thick, thick and cross woven & homogenous thin mask fabrics. HEC was found to be more compatible with mask fabrics than xanthan gum. HEC improved mask softness and dampness and had an improved water binding and water retention ability compared to xanthan gum. The split face sensory evaluation results demonstrated that sheet masks containing HEC had improved adhesion and lubricity, provided more moisture to the skin, better elasticity and gloss after use and took longer to dry out. Overall, the panel preferred facial masks which contain HEC.展开更多
An efficient algorithm for facial features extractions is proposed. The facial features we segment are the two eyes, nose and mouth. The algorithm is based on an improved Gabor wavelets edge detector, morphological ap...An efficient algorithm for facial features extractions is proposed. The facial features we segment are the two eyes, nose and mouth. The algorithm is based on an improved Gabor wavelets edge detector, morphological approach to detect the face region and facial features regions, and an improved T-shape face mask to locate the extract location of facial features. The experimental results show that the proposed method is robust against facial expression, illumination, and can be also effective if the person wearing glasses, and so on.展开更多
A novel practical and universal method of mask-wearing detection has been proposed to prevent viral respiratory infections.The proposed method quickly and accurately detects mask and facial regions using welltrained Y...A novel practical and universal method of mask-wearing detection has been proposed to prevent viral respiratory infections.The proposed method quickly and accurately detects mask and facial regions using welltrained You Only Look Once(YOLO)detector,then applies image coordinates of the detected bounding box(bbox).First,the data that is used to train our model is collected under various circumstances such as light disturbances,distances,time variations,and different climate conditions.It also contains various mask types to detect in general and universal application of the model.To detect mask-wearing status,it is important to detect facial and mask region accurately and we created our own dataset by taking picture of images.Furthermore,the Convolutional Neural Network(CNN)model is trained with both our own dataset and open dataset to detect under heavy foot-traffic(Indoors).To make the model robust and reliable in various environment and situations,we collected various sample data in different distances.And through the experiment,we found out that there is a particular gradient according to the mask-wearing status.The proposed method searches the point where the distance between the gradient for each state and the coordinate information of the detected object is the minimum.Then it carry out the classification of mask-wearing status of detected object.Lastly,we defined and classified three different mask-wearing states according to the mask’s position(With mask,Wear a mask around chin and Without mask).The gradient according to the mask-wearing status,is analyzed through linear regression.The regression interpretation is based on coordinate information of mask-wearing status and the sample data collected in simulated environment that considering distances between objects and the camera in the World Coordinate System.Through the experiments,we found out that linear regression analysis is more suitable than logistic regression analysis for classification of people wearing masks in general-purpose environments.And the proposed method,through linear regression analysis,classifies in a very concise way than the others.展开更多
Facial cellulite are infections of the cellulo-adipose tissues of the human face. Head and neck cellulitis is today one of the most serious ENT emergencies, which is very life-threatening and requires immediate multid...Facial cellulite are infections of the cellulo-adipose tissues of the human face. Head and neck cellulitis is today one of the most serious ENT emergencies, which is very life-threatening and requires immediate multidisciplinary care. Diabetes mellitus is one of the most common predisposing factors. They are serious conditions because of the rapidity with which they tend to spread. They perform an extensive necrotizing condition, developing from a banal, pharyngeal or dental infection, and spreading along the aponeurotic partitions of the face and neck. The etiologies are diverse and come mainly from dental infections. Nasosinus infections can be the cause especially on immunocompromised patients. The diagnosis is mainly clinical. The treatment is medico-surgical and must start as soon as the diagnosis is made to avoid complications. We report a case of an abscess of the nasal septum responsible for facial cellulitis in 45-year-old diabetic patient. Her diabetes was irregularly followed. The septal abscess spread over a few days to the tissues of the face. He was received in a picture of impaired general condition with significant facial oedema. He received rapid and appropriate medical and surgical car. He progressed well under treatment after 15 days.展开更多
In view of the fact that wet-cloth facial masks are complicated in components and low in utilization efficiency of active ingredients,an all-solid-state nanofiber facial mask was innovatively developed.In the paper,br...In view of the fact that wet-cloth facial masks are complicated in components and low in utilization efficiency of active ingredients,an all-solid-state nanofiber facial mask was innovatively developed.In the paper,brief introductions were given to the formation mechanism,microstructure and structural features of the nanofiber facial mask.High-molecular polymer and active ingredients were directly turned into nano cellosilk and a piece of nanofiber membrane of micrometer thick was span onto the receiving base cloth.Compared with common wet-cloth facial mask,nanofiber facial mask has less additive ingredients but works more effectively.For example,it is easy to apply,good at water retention,excellent in loading capacity and biocompatibility.The paper ended with existing problems with materials of all-solid-state nanofiber facial mask,its development orientation and application prospect.展开更多
文摘To thoroughly understand market opportunity of freeze-dried facial mask and deeply get insight of consumers’usage behavior and needs,evaluate sensory feelings of 10 screened commercial freeze-dried facial mask products,group test products according to the differences of sensory attributions via Principal Component Analysis(PCA)and Agglomerative Hierarchical Clustering(AHC),pick up the representative products.Freeze-dried facial mask users evaluate satisfaction degree of picked up products and participate survey of usage behavior/cognition.Analyze consumer data by AHC to get consumer segmentations and their profile.The test results show that,sensory data and consumer data,which is from consumers test of screened representative products by performing PCA and AHC on sensory data,can be verified mutually.It is helpful to understand the needs of consumer segmentations and reason to buy by combining sensory data and consumer test.
文摘The outbreak of coronavirus has led to an increase in the demand for facemasks globally. Unavailability of appropriate polypropylene non-woven fabrics face masks as a result of inadequate supply to satisfy the growing population has brought about the manufacturing of locally fabrics masks to augment or substitute standard medical class facemasks. The study aims at analyzing airflow of these locally manufactured fabrics to determine possible means of transmitting the virus as well as establish comfort of the user of these masks. Standard polypropylene non-woven, woven and knitted fabrics were considered for the study. Air permeability test was conducted on these fabrics using Frazier Air permeability tester. Depending on the property significant variation in the textile fabrics, polypropylene non-woven is widely accepted for facial masks. Nevertheless, this study illustrates that woven and knitted fabrics have more open structures, which allow a high rate of air penetration and so may require two or three layers to prevent antimicrobial or antiviral potential.
基金supported in part by the National Natural Science Foundation of China(No.11672142)the Technology Innovation 2025 Program of the Municipality of Ningbo(No.2019B10122)。
文摘The explosive demands for facial masks as vital personal protection equipment(PPE)in the wake of Covid-19 have challenged many industries and enterprises in technology and capacity,and the piezoelectric ceramic(PZT)transducers for the production of facial masks in the welding process are in heavy demand.In the earlier days of the epidemic,the supply of ceramic transducers cannot meet its increasing demands,and efforts in materials,development,and production are mobilized to provide the transducers to mask producers for quick production.The simplest solution is presented with the employment of Rayleigh-Ritz method for the vibration analysis,then different materials can be selected to achieve the required frequency and energy standards.The fully tailored method and results can be utilized by the engineers for quick development of the PZT transducers to perform precise function in welding.
文摘An equipment test and sensory evaluation were conducted to identify the compatibility and sensory characteristics of HEC in facial masks. These results were then compared to xanthan gum usage. The equipment test results showed that HEC promoted proper tensile capacity in masks which are made from strong structured fabrics such as medium thick, thick and cross woven & homogenous thin mask fabrics. HEC was found to be more compatible with mask fabrics than xanthan gum. HEC improved mask softness and dampness and had an improved water binding and water retention ability compared to xanthan gum. The split face sensory evaluation results demonstrated that sheet masks containing HEC had improved adhesion and lubricity, provided more moisture to the skin, better elasticity and gloss after use and took longer to dry out. Overall, the panel preferred facial masks which contain HEC.
基金Sponsored by the National Natural Science Foundation of China (60772066)
文摘An efficient algorithm for facial features extractions is proposed. The facial features we segment are the two eyes, nose and mouth. The algorithm is based on an improved Gabor wavelets edge detector, morphological approach to detect the face region and facial features regions, and an improved T-shape face mask to locate the extract location of facial features. The experimental results show that the proposed method is robust against facial expression, illumination, and can be also effective if the person wearing glasses, and so on.
基金This research was supported by a grant(2019-MOIS32-027)of Regional Specialized Disaster-Safety Research Support Program funded by the Ministry of Interior and Safety(MOIS,Korea)This work was supported by Institute of Information&communications Technology Planning&Evaluation(IITP)grant funded by the Korea government(MSIT)(No.2021-0-01972).
文摘A novel practical and universal method of mask-wearing detection has been proposed to prevent viral respiratory infections.The proposed method quickly and accurately detects mask and facial regions using welltrained You Only Look Once(YOLO)detector,then applies image coordinates of the detected bounding box(bbox).First,the data that is used to train our model is collected under various circumstances such as light disturbances,distances,time variations,and different climate conditions.It also contains various mask types to detect in general and universal application of the model.To detect mask-wearing status,it is important to detect facial and mask region accurately and we created our own dataset by taking picture of images.Furthermore,the Convolutional Neural Network(CNN)model is trained with both our own dataset and open dataset to detect under heavy foot-traffic(Indoors).To make the model robust and reliable in various environment and situations,we collected various sample data in different distances.And through the experiment,we found out that there is a particular gradient according to the mask-wearing status.The proposed method searches the point where the distance between the gradient for each state and the coordinate information of the detected object is the minimum.Then it carry out the classification of mask-wearing status of detected object.Lastly,we defined and classified three different mask-wearing states according to the mask’s position(With mask,Wear a mask around chin and Without mask).The gradient according to the mask-wearing status,is analyzed through linear regression.The regression interpretation is based on coordinate information of mask-wearing status and the sample data collected in simulated environment that considering distances between objects and the camera in the World Coordinate System.Through the experiments,we found out that linear regression analysis is more suitable than logistic regression analysis for classification of people wearing masks in general-purpose environments.And the proposed method,through linear regression analysis,classifies in a very concise way than the others.
文摘Facial cellulite are infections of the cellulo-adipose tissues of the human face. Head and neck cellulitis is today one of the most serious ENT emergencies, which is very life-threatening and requires immediate multidisciplinary care. Diabetes mellitus is one of the most common predisposing factors. They are serious conditions because of the rapidity with which they tend to spread. They perform an extensive necrotizing condition, developing from a banal, pharyngeal or dental infection, and spreading along the aponeurotic partitions of the face and neck. The etiologies are diverse and come mainly from dental infections. Nasosinus infections can be the cause especially on immunocompromised patients. The diagnosis is mainly clinical. The treatment is medico-surgical and must start as soon as the diagnosis is made to avoid complications. We report a case of an abscess of the nasal septum responsible for facial cellulitis in 45-year-old diabetic patient. Her diabetes was irregularly followed. The septal abscess spread over a few days to the tissues of the face. He was received in a picture of impaired general condition with significant facial oedema. He received rapid and appropriate medical and surgical car. He progressed well under treatment after 15 days.
文摘In view of the fact that wet-cloth facial masks are complicated in components and low in utilization efficiency of active ingredients,an all-solid-state nanofiber facial mask was innovatively developed.In the paper,brief introductions were given to the formation mechanism,microstructure and structural features of the nanofiber facial mask.High-molecular polymer and active ingredients were directly turned into nano cellosilk and a piece of nanofiber membrane of micrometer thick was span onto the receiving base cloth.Compared with common wet-cloth facial mask,nanofiber facial mask has less additive ingredients but works more effectively.For example,it is easy to apply,good at water retention,excellent in loading capacity and biocompatibility.The paper ended with existing problems with materials of all-solid-state nanofiber facial mask,its development orientation and application prospect.
