Thin-layer drying characteristics, modeling and quality attributes of tomato slices dried with infrared radiation heating

An Infrared dryer was used to examine the drying of tomato slices. In this investigation, the influence of infrared radiation (IR) on the rate of drying, physical quality, energy combustion of tomato was estimated at three different levels of intensity at 0.15, 0.20, and 0.35 W/cm² under different air flows of 0.5, 1, and 1.5 m/s. Tomato slices were dried with an initial moisture content of 19.7 to 0.17 g water/g dry solids by infrared drying. The moisture content and drying rates are found to be dramatically affected by infrared density. An increase in the drying rate and a decrease in the drying period occurred with increasing infrared intensity. A decrease in energy consumption was detected with the increase of radiation intensity. The results clarified that the shrinkage ratio increased with increasing infrared intensity. The rehydration ratio raised with the increase in radiation intensity. The change in the colour difference of dried slices increased with an increase in radiation intensity. The models were in comparison using (R²) coefficient of determination, modelling efficiency (EF), and (χ²) reduced chi-square. Midilli model was fit for simulation of all drying conditions and could be used to estimate tomato moisture content at any time during the infrared drying process.

Effects of the use of bioceramic wraps in patients with lower limb venous ulcers: A randomized double-blind placebo-controlled trial / 中西医结合学报

BACKGROUND@#Venous ulcer represents the most advanced stage of chronic venous insufficiency. It is an important public health problem and has a significant impact on patients' quality of life due to chronic pain, inability to work, need for hospitalization and frequent outpatient follow-up.@*OBJECTIVE@#We investigated the treatment benefits of far-infrared ceramic (cFIR), in a 90-day study of lower limb venous ulcers and looked at ulcer healing scores, quality of life, serum bio-markers of oxidative stress and antioxidant defense enzymes.@*DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS@#This is a randomized double-blind placebo-controlled study conducted in the Vascular Surgery Service of a hospital located in the northwest region of the State of Rio Grande do Sul, Brazil. We included patients with lower limb venous ulcers who were randomized to use either a bioceramics wrap or a placebo wrap for 90 days.@*MAIN OUTCOME MEASURES@#The following evaluations were conducted at baseline and after 15, 30, 60 and 90 days: ulcer healing score, quality of life, and serum markers of oxidative stress and antioxidant enzyme activity.@*RESULTS@#Patients (n = 24) with lower limb venous ulcers were randomized into two treatment groups. cFIR decreased the ulcer size on day 30 (P = 0.042) and 90 (P = 0.034) and the total ulcer healing scale scores on day 30 (P = 0.049) and 90 (P = 0.02) of the treatment, when compared to baseline. Additionally, cFIR improved tissue type (epithelial tissue) on day 60 (P = 0.022) when compared to baseline evaluation.@*CONCLUSION@#cFIR clinically improved ulcer healing in patients with lower limb venous ulcers.@*TRIAL REGISTRATION@#RBR-8c7xzn on ReBEC.

A Comparative Analysis between Short Wave Diathermy and Infrared Radiation’s Effects on the Patients with Chronic Low Back Pain \r\nDue to Lumbar Spondylosis\r\n

Introduction: Low back pain is a symptom and not a disease.The low back pain is considered to incorporate dorsal painfound any place between the 12 thoracic vertebra and lowerbuttock up to gluteal folds or anus. Lumbar spondylosis is atypical reason for chronic low back pain and chronic disability.Objective: The main purpose of this research is to give acomparative analysis between short wave diathermy andinfrared radiation for treating lower back pain caused byspondylosis.Method: This was an observational study. A randomizedclinical trial study was conducted on Department of PhysicalMedicine and Rehabilitation, BSMMU, Shahbagh, Dhaka on153 patients who came to hospital with lower back pain andsuffered from spondylosis. The study duration was from 1stMarch 2010 to 15 September, 2010.Results: Out of 153 patients, irrespective of sex, it was foundthat most of the patients (50.98%) belong to 40-49 years agegroup followed by: 50-59 years (27.45%), 30-39 years(11.11%) and 60-70 years (10.46%) age group. in 72.2%patients prolonged sitting exacerbate the lower back pain.Prolonged standing was also found as another aggravatingfactor of pain among the study patients (17.6%). Prolongedwalking (5.9%) and leaning forward (3.3%) came next in theorder of aggravating factors for lower back pain. The study alsoshowed the performance difference between SWD and IRR onthe patients.Conclusion: Considering the information gathered from thisstudy, it can be concluded that all the tested therapies seemedto improve the patients with chronic low back pain. But IRR andSWD showed no significant difference in improvement for thepatients with chronic LBP due to lumbar spondylosis.

Effects of ceramic garments on 10-km running performance

Aims: The use of electromagnetic waves by phototherapy to skeletal muscle presents potential ergogenic effects. The aim of this study was to analyze the effect of using bioceramic clothes on performance, heart rate (HR) and rating of perceived exertion (RPE) during a 10 km race. Our hypothesis is that the use of such clothes modifies these variables. Methods: Participants were 10 runners (27.9 ± 4.2 years) who performed two 10 km performances on track under different intervention conditions: bioceramic garments (CER) and placebo garments (PLA). The mean velocity (MV), HR and rate of perceived exertion (RPE) were monitored at each trial. Additionally, partial MV was calculated in three phases: (1) start (first 400 m), (2) middle (400-9600 m) and (3) end (last 400 m). Results: MV in CER condition was significantly higher than in PLA condition (11.8 ± 1.0 km·h-1 vs 11.4 ± 1.2 km·h-1; F = 6.200; P = 0.034; ŋp² = 0.408). HR and RPE values in CER condition were not different from PLA condition. Conclusions Our main finding was that the use of bioceramic clothes (CER) increased MV when compared to the PLA condition. Based on these results, bioceramic may be used as an ergogenic resource to increase performance.(AU)

Treatment of Cervical Spondylosis in Southeast Nigeria: Benefits of Intermittent Alternating Upright Distraction and Flexion High Weight Cervical Traction.

Cervical spondylosis is a very common and painful condition affecting many people. The mainstay of treatment of this painful condition has been analgesics which have not proved effective in addition to their untoward complications. Biomechanical studies have shown the potential of neck distraction by traction to be very promising in pain relief and an assessment of high weight cervical traction was done to evaluate its efficacy. Fifty patients including thirty (30) males and twenty (20) females (mean age: 50.46±8.31 years, mean weight: 87.17±14.30 kg, mean height: 1.66±0.12 meters) were available for study on the usefulness of infrared radiation only and a combination of infrared radiation and cervical traction in a cross-over research design at the National Orthopaedic Hospital Enugu. Infrared radiation were applied three times a week for six weeks before a washout period of seven days and then application of cervical traction combined with infrared radiation were done three times a week for six weeks. Pain rating scores were used to evaluate pain relief before, during and after treatment sessions and finally after six weeks. The results of the study showed that cervical traction in combination with infrared radiation was superior (p < 0.05) to infrared radiation alone in the management of cervical spondylosis as there was prolonged relief of pain in those that had cervical traction. It is recommended that high weight cervical traction should always be used in the management of cervical spondylosis.

Analysis of the Correlation between the Infrared Radiation Temperature of Specific Points and the Symptoms in Electracupuncture-treated Patients with Overactive Bladder / 上海针灸杂志

Objective To observe the correlation between infrared radiation temperature of specific points of the bladder (Zhongji, Pangguangshu, Weizhong and Shenshu) and OAB symptom severity in patients with overactive bladder (OAB) before and after electroacupuncture.Method Eighty-six patients were treated with electroacupuncture. The infrared radiation temperatures of the points were measured using an infrared thermograph in the patients before and after electroacupuncture. The patients’ symptoms were scored using the OAB Symptom Score (OABSS). The correlation between the infrared radiation temperature and the symptom score was analyzed according to the changes in the two.Result In the patients, the OAB symptom score (OABSS) was 8.00 (7.00, 9.00) before treatment and 2.00 (4.00, 6.00) after. There was a statistically significant difference between the two (P<0.05). There were statistically significant pre-/post-treatment difference in the infrared radiation temperatures of the points (Zhongji, Pangguangshu, Weizhong and Shenshu) (P<0.05). The OAB symptom score (OABSS) and Zhongji infrared radiation temperature had a rank and positive correlation.Conclusion Zhongji infrared radiation temperature has important reference value for the assessment of OAB symptom severity.

The explore of the protective effect of the far-infrared radiation therapy for hemodialysis patients arteriovenous fistula function / 中国医学装备

Objective:By analyzing the principle and mechanism of far-infrared radiation therapy, explore the far infrared radiation therapy for arteriovenous fistula function protection significance. Methods: Summarized and analyzed in hemodialysis patients arteriovenous fistula dysfunction causes and hazards, combined with clinical results, analyzed the intervention and protective effect of far-infrared radiation therapy for arteriovenous fistula.Results: Long-term treatment of far-infrared radiation play a very effective role in the intervention and protection for arteriovenous fistula function maintenance.Conclusion: By analyzing the principle and mechanism of far infrared radiation therapy, summed arteriovenous fistula dysfunction reasons. Clarified the far-infrared radiation therapy has a positive clinical significance in hemodialysis patients arteriovenous fistula function of protection.

Antibacterial effect of citrus press-cakes dried by high speed and far-infrared radiation drying methods

In this study, the antibacterial effect was evaluated to determine the benefits of high speed drying (HSD) and far-infrared radiation drying (FIR) compared to the freeze drying (FD) method. Citrus press-cakes (CPCs) are released as a by-product in the citrus processing industry. Previous studies have shown that the HSD and FIR drying methods are much more economical for drying time and mass drying than those of FD, even though FD is the most qualified drying method. The disk diffusion assay was conducted, and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined with methanol extracts of the dried CPCs against 11 fish and five food-related pathogenic bacteria. The disk diffusion results indicated that the CPCs dried by HSD, FIR, and FD prevented growth of all tested bacteria almost identically. The MIC and MBC results showed a range from 0.5-8.0 mg/mL and 1.0-16.0 mg/mL respectively. Scanning electron microscopy indicated that the extracts changed the morphology of the bacteria cell wall, leading to destruction. These results suggest that CPCs dried by HSD and FIR showed strong antibacterial activity against pathogenic bacteria and are more useful drying methods than that of the classic FD method in CPCs utilization.

Prevenção de isquemia hepática normotérmica durante perfusão hepática in situ com três diferentes soluções de preservação: análise experimental através de termografia por radiação infravermelha em tempo real / Prevention of normothermic hepatic ischemia during in situ liver perfusion with three different preservation solutions: experimental analysis by realtime infrared radiation thermography

OBJETIVO: Determinar a aplicabilidade da termografia por radiação infravermelha no monitoramento da perfusão hepática in situ com diferentes soluções de preservação. MÉTODOS: 24 ratos Wistar machos adultos, foram distribuidos aleatoriamente em quatro grupos de seis animais: grupo EC; ®grupo CUST; ®grupo CEL e grupo RL. Todas as soluções estavam resfriadas à exatamente 4ºC e posicionadas 20 cm acima do nível do fígado. As imagens infravermelhas, com as respectivas avaliações de temperatura da superfície hepática, foram captadas em tempo real : imediatamente após a laparotomia; após a canulação dos vasos e imediatamente antes da infusão; a cada minuto cronometrado após início da infusão até o quinto minuto de infusão. As médias de temperaturas de cada momento foram comparadas intra e intergrupos através do teste da Diferença entre médias de distribuição normal, com nível de significância p 0,05. RESULTADOS: Houve diferença entre as temperaturas do momento da laparotomia e imediatamente após a canulação; entre este último e após o primeiro minuto de perfusão; e entre as medidas ao final do primeiro e do quinto minutos de perfusão em todos os grupos. O grupo CEL mostrou diferença significativa adicional entre as temperaturas medidas ao final do primeiro e do segundo minutos. CONCLUSÃO: Foi possível avaliar o resfriamento hepático durante a perfusão das soluções de preservação utilizando-se a radiação infravermelha. As soluções tiveram comportamento semelhante entre si, com a solução Celsior® mostrando potencial adicional de resfriamento significativo até ao final do segundo minuto.

OBJECTIVE: To establish the usefulness of infrared radiation thermography on monitoring in situ liver perfusion with different preservation solutions during liver harvesting. METHODS: Twenty-four adult male Wistar rats, weighing 385.31g were randomly divided into four groups of six animals each according to the solution used to perfuse the liver (Euro-Collins® solution - EC group; Custodiol® solution - CUST group; Celsior® solution - CEL group and Ringer-Lactate solution - RL group). Under inhalatory ether anesthesia, animals were submitted to upper transversal laparotomy, exposure of median and left-lateral hepatic lobes, heparin injection (500 UI/Kg) through infrahepatic vena cava, portal vein infusion through 18G catheter of cold (4°C) solution according to the group of study. Infrared images, with respective temperature avaliations from hepatic surface, were picked up in real time by Therma CAM SC500® infrared camera positioned at constant distance from three fixed points of the diaphragmatic surface of median and left lateral lobes at the following moments regarding liver perfusion: immediately after laparotomy; after portal vein cannulation and immediately before solution infusion; at each minute from the beginning of liver perfusion during five minutes. Mean temperatures of each moment were compared intra and intergroups with the difference between means test with normal distribution, with significance level of 5 percent (p=0.05). RESULTS: There was statistically significant difference of means temperatures between the moment of laparotomy and immediately after cannulation; between this later and after the first minute of perfusion; and between the first and fifth minutes of infusion in all groups of study in a similar way. CEL group showed additional difference between the first and second minutes means temperatures. Intergroup comparison showed Euro-Collins solution with significant less cooling power when compared to all others...

Effect of Infrared Radiation and Magnetic Fields on Synovitis of Rabbit with Knee Osteoarthritis / 中国康复理论与实践

@#ObjectiveTo investigate the effects of infrared radiation and magnetic fields on the synovitis of rabbit with experimental knee osteoarthritis (OA).MethodsTwenty-four New Zealand grown rabbits were duplicated for OA model of the knee by extended fixation technique, and after 6 weeks, all rabbits were unchained from fixation. The rabbits were randomly divided into four groups: control group (no treatment), infrared group (treated with infrared radiation ), magnet-therapy group (treated with magnetic fields ) and the combined therapy group (treated with infrared radiation and magnetic fields). At the ends of the first, second and third week after treatment, 2 rabbits in each group were taken to measure the general change and histopathology of their synovium.ResultsCompared with other groups, the severity of synovitis (include the synovium line cells proliferation, the invading of granulation and blood vessels in the underlayer of synovium, the infiltration of inflammatory cells) declined significantly in combined therapy group. Scores of Ayral's index of combined group were significantly lower than other groups ( P<0.05), and there was no significant difference between infrared group and magnet-therapy group ( P>0.05).ConclusionThe combination of infrared radiation and magnetic fields can efficiently suppress the synovitis of OA and alleviate the tissue's destructions.

Effects of Infrared Radiation on Skin Photo-Aging and Pigmentation

Infrared radiation is increasingly and uncritically used for cosmetic and wellness purposes, despite the poorly understood biologic effects of such treatments on humans. In the present study, we investigated the effects of infrared radiation on collagen and elastin production in dermal fibroblasts, as well as the clinical and histopathologic effects of infrared radiation on photo-aged facial skin lesions. In order to determine the effects of infrared radiation on collagen and elastin production, dermal fibroblasts were exposed to infrared radiation for varying lengths of time and collagen and elastin contents were subsequently determined. Additionally, 20 patients with mild to moderate facial wrinkles and hyperpigmented lesions received daily treatments of far infrared radiation (900 to 1000micronm) for six-months. During the treatment, patients and a medical observer conducted independent photographic and clinical evaluations every 4 weeks, and skin biopsies were obtained for histological analysis at baseline and one month post-treatment. We found that the content of collagen and elastin produced by the fibroblasts increased after infrared radiation, and that this increase was proportional to the duration of irradiation exposure. Following 6 months of treatment, all patients reported good (51-75%) improvements in skin texture and roughness. Additionally, patients noted fair (25-50%) improvement in color tone of the skin; however, improvements in hyperpigmented lesions were not observed. Objective medical evaluation of the patients indicated that roughness and laxity were fairly improved, but there was no significant improvement in hyperpigmented lesions. Histological examination failed to reveal any differences as well. These results suggest that infrared radiation may have beneficial effects on skin texture and wrinkles by increasing collagen and elastin contents from the stimulated fibroblasts. Therefore, skin treatment with infrared radiation may be an effective and safe non-ablative remodeling method, and may also be useful in the treatment of photo-aged skin.

Measurement of infrared radiation by local body-surface and the clinical significance / 中国医学物理学杂志

Thermometry of body by a contact temperature or thermal imaging analysis by infrared radiation (IR)is a routine method in clinical application. Twelve cerebrovascular disease patients and some patients who suffered from joint inflammation,nerve inflammation were examined.The result made clear that the method and the instrument is adaptable to simple and reliable thermal diagnosis for the discovery and premonition of different kinds of diseases and their course and tendency.

The Effect of Hot Bath and Infrared Radiation on Hypertomia in the Affected Upper Extremity of Hemiplegic Patients. Changes in surface electromyogram / 日本温泉気候物理医学会雑誌

We investigated the effect of hot bath and infrared radiation on tonic muscle discharges due to hypertonia in the affected upper extremity of hemiplegic patients using surface electromyography (EMG). Subjects were 15 hemiplegic patients with cerebrovascular diseases. The subjects were selected on the basis of the presence of considerable rigidospasticity in the biceps brachii muscle (BBM). Hot bath (42°C) was applied for more than 3 minutes in the supine position with the cubital joint fixed in flexion in 11 subjects. Infrared radiation (300 watts) was applied to the flexor side of the affected upper extremity in the same posture in 13 subjects. Surface EMGs of the BBM and triceps brachii muscle (TBM) were recorded bipolarly with waterproof disc electrodes before, during, and after the trials of hot bath and infrared radiation. The recorded EMG was rectified and integrated, and then converted into sequential pulses. The amount of EMG was calculated as the number of pulses. The EMG of the affected side was normalized as a percentage of the amount versus that of the unaffected side in maximum voluntary contraction. The EMGs of the BBM and TBM showed tonic muscle discharges in all subjects in the resting state. The EMGs of the BBM and TBM averaged 6.4% and 1.4% before hot bath and 3.3% and 1.2% before infrared radiation. The EMG of the BBM in the third 1 minute during hot bath decreased by 58.8% (p<0.01) and increased slightly after the trial. The EMG of the TBM during hot bath increased insignificantly, and decreased by 25.3% (p<0.05) in the second 1 minute after the trial. The EMGs of the BBM and TBM in the third 1 minute during infrared radiation decreased by 31.9% (p<0.01) and 9.3% (p<0.05), and the decrease persisted after the trial. The results demonstrated that thermotherapy, especially hot bath, decreases the tonic muscle discharges due to rigidospasticity.

Development of noncontact thermometer / 医疗卫生装备

The thermopile used to measure infrared energy from body radiation, a medical noncontact thermometer is developed in this paper. The thermometer, which can be applied to practices, adopts chop amplification, environment temperature compensation, ??24bit ADC and multilayer optical drawtube.