Types Of Test Samples Research Articles

The effect of Coconut Fruits as a Success Factor in Production of Virgin Coconut Oil by Oil-induced Fermentation

The production of virgin coconut oil by the community is carried out using various techniques. One of them is fermenting using pure coconut oil as an inducement oil. However, production failures often occur. This study aims to examine the condition of coconut fruit as one of the success factors in production. There were 3 types of test samples, namely old coconuts (A), old coconuts containing kentos (B) and half-ripe coconuts (C). Production is carried out using the fermentation method and virgin coconut oil is used as the cooking oil. The three types of samples were treated the same, namely the volume of coconut milk, the volume of castor oil, the condition of room temperature and the length of time fermentation. The test was carried out 5 times for each sample. The success of the fermentation is indicated by the separation of the oil from the water and blondo. The results showed that of the 5 times of production, the highest production success occurred in sample A, which was 87%, while sample B was 40% and sample C was 20%. It was concluded that production using coconut milk from old coconuts (sample A), had a higher production success rate compared to coconut milk from B and samples C.

Light-Induced Colour Changes in Wood Surfaces in Indoor Conditions Determined by an Artificial Accelerated Test: Influence of Wood Species and Coating Materials

Stabilising the natural colour of wood species exposed to light in indoor conditions is a challenge that could be better addressed based on a deeper understanding of the occurring phenomena and influencing factors. This paper investigates comparatively the light-induced colour changes for three hardwood species, namely, European maple (Acer pseudoplatanus L.), European ash (Fraxinus excelsior L.) and European walnut (Juglans regia L.), as well as the influence of finishing with three types of clear, colourless waterborne lacquers: acrylic-polyurethane (F1), acrylic (F2) and polyurethane (F3) on their colour stability. Colour measurements in the CIELab system in conjunction with an artificial accelerated ageing test under the action of UV-VIS radiation, simulating natural light passing through window glass, and two types of test samples were employed to highlight the influence and contributions of the wood substrate and of the coating films to the global colour modifications. Coating films applied on 1 mm clear glass slides were employed as a sort of “detachable” finish for this purpose. Direct exposure to UV-VIS light caused visible colour changes for both uncoated and coated wood surfaces, the values of the calculated colour differences (ΔE) after a 72 h exposure being dependant on both the wood species and the coating material. Excepting two situations for walnut, statistically significantly higher colour differences were obtained for the uncoated samples: maple (9.36 units), ash (8.39 units), walnut (6.20 units), compared to the coated ones: maple (4.92–5.71 units), ash (2.25–3.94 units), walnut (4.74–7.70 units). The wood substrates underlying the coating films were found to bring the maximum contribution to the overall colour changes in the clear coated surfaces, while the coating films employed in this research demonstrated a fairly good colour stability to UV-VIS light exposure, with maximum colour changes (∆E) up to only 1.30 units. Overall, the wood species and the type of coating were found as influencing factors in interaction with the light-induced colour changes in wood surfaces in indoor conditions.

An RT-qPCR Assay from Rectal Swabs for the Detection of Rabbit Hemorrhagic Disease Virus 2 in Natural Cases

Rabbit hemorrhagic disease virus 2 (RHDV2 or Lagovirus europaeus GI.2) is spreading across North America. This has enabled submissions of lagomorphs for testing to veterinary diagnostic laboratories (VDLs). The liver is currently the gold-standard sample type for testing by RT-qPCR. VDL clients usually seek alternate diagnostic approaches that permit simpler and faster sample collection with less risk of environmental contamination; there is also a necessity for a sample type that can be collected from live animals. Therefore, the goal of this study was to optimize and evaluate an RT-qPCR assay on rectal swabs collected from a group of carcasses of leporids of different species that were submitted to a VDL during an RHDV2 outbreak. A total of 130 carcasses were tested both by liver tissue and rectal swab RT-qPCR. The results of the liver samples were considered the gold standard, and 73 carcasses tested positive and 57 carcasses tested negative in liver. Out of the 73 liver RT-qPCR-positive carcasses, 64 tested positive and 9 tested negative on the rectal RT-qPCR. All 57 liver RT-qPCR-negative carcasses tested negative on the rectal RT-qPCR. The sensitivity and specificity of the rectal RT-qPCR were 88% and 100%, respectively, most likely due to significantly ( p < 0.001 ) lower viral loads in the rectal swabs (median Ct: 27.03) compared to the liver samples (median Ct: 12.69). Despite being more than 4 logs less sensitive, RT-qPCRs from rectal swabs can be used to screen leporid carcasses for the presence of RHDV2 RNA.

Development of formulae for dental age estimation using digital radiographs in the Mongolian population

This study aimed to examine the applicability of the pulp/tooth ratio (PTR) method for age estimation in Mongolian populations using panoramic radiographs and derive new regression formulae. Moreover, we aimed to assess the accuracy of these formulae in other subjects from the Mongolian population and compare them with the other formulae derived from different Asian populations.The total sample size of the study was 381. The formulae were derived from the examination of panoramic radiographs of 271 individuals aged 15–62 years. Following Cameriere’s method, PTR was calculated for the upper and lower canine teeth. Linear regression analyses were performed between the actual age and that obtained from upper-lower canine PTR and established formulae for age estimation. To verify the formulae, two types of test samples were collected: 73 panoramic radiographs and 37 periapical radiographs. The estimated age was calculated using our new formulae and three other formulae derived from Asian populations.The correlation coefficient between the actual age and that obtained by PTR was significantly negative for both canines. According to our new regression formulae, the differences between the estimated age and actual age showed a bell-shaped curve distribution in both test groups. While using the other formulae derived from the Asian population, the distribution patterns obtained were significantly different in the Mongolian population.This study was the first to examine the relationship between actual age and PTR in Mongolian population, and these results advance the field of forensic science in Mongolia.

Influence of Magnetic Field on Sound Transmission Loss of the Unit Filled with Magnetorheological Fluid.

To explore the feasibility of applying magnetorheological fluids (MRFs) in the field of noise control, the influence of the magnetic field intensity and direction on the sound transmission loss (STL) of a unit filled with MRF (MRF unit) were investigated in this study. First, two types of test sample containing the MRF unit were designed and fabricated. The magnetic field applied to the MRF was provided by the permanent magnets used in pairs. The direction of the magnetic field was perpendicular or parallel to the direction of the sound wave propagation. The distribution of the magnetic field intensity of the two types of test samples was simulated using magnetostatic finite element analysis and validated with the magnetic field intensity measured using a Teslameter. For comparison, test samples containing air and water units were also prepared. Then, the STL of the two types of test samples were measured under different magnetic field intensities using the impedance tube method. Finally, the STL curves of the two types of test samples were presented, and the influence of magnetic field intensity and direction on the STL were discussed. The results demonstrate that the magnetic field direction has a significant influence on the STL of the MRF unit. In addition, when the magnetic field direction is parallel to the sound propagation direction, the STL of the test sample containing MRF unit significantly increases with the increase of the magnetic field intensity at low and middle frequencies.

A new boundary interlock geometry design pattern to strengthen FDM part multi-material interface

Multi-material Fused Deposition Modeling (FDM) enables the realization of designs in complex geometries with multiple materials. However, achieving an adequate level of interfacial bonding strength between different materials remains a significant challenge. Other than addressing this challenge through material bonding at molecular scale or optimizing the printing parameters, new design methodologies also pose good potential. This work studied the mechanical properties of multi-material printed objects, with a particular focus on the interface zone built between the various materials at their geometrical borders. Four types of test samples were designed, printed, and tested: (A) single-material test samples uni-body (without boundary interface); (B) single-material test samples with planar boundary interface; (C) bi-material test samples with a planar boundary interface; and (D) bi-material test samples with new boundary interlock geometry design interface. The comparison of the mechanical performance between Type-A, -B, and -C test samples demonstrated the influence of the presence of a geometrical boundary interface between the same material and different materials. The comparison between Type-C and -D demonstrated the impact of introducing boundary interlock geometry. This study showed that with the new boundary interlock geometry design, the mechanical strength (tensile strength) of multi-material prints can be greatly improved. Furthermore, a Design of Experiment is conducted to identify the interlock geometry design parameters optimized for tensile strength. This work proves the significance of boundary interlock geometry design in multi-material printing and provides a methodology to explore new boundary interlock geometry design patterns to strengthen the FDM part multi-material interface.

Longevity and neutralisation activity of secretory IgA following SARS-CoV-2 infection

The mucosal barrier is a primary defence against inhaled pathogens, comprising secretory antibodies which have the potential to block viral entry and neutralise infection. There is an ongoing need for greater understanding of the mucosal immunity to SARS-CoV-2 infection. In this study, we investigated mucosal IgA through non-invasive saliva sampling of healthcare workers. A total of 551 saliva samples were collected from staff at Great Ormond Street Children’s Hospital who previously tested positive for COVID-19. Participant metadata included age, gender, ethnicity and symptoms. IgA titres were measured by ELISA against viral antigens spike protein, nucleocapsid protein, and spike receptor-binding domain. SARS-CoV-2 neutralisation was measured using a VERO E6 cell culture infection assay. We found that approximately 30% of saliva samples contained detectable IgA specific for at least one of the SARS-CoV-2 antigens. IgA levels in saliva decreased with the time post-infection, and were largely undetectable after six months. IgA titres specific to SARS-CoV-2 were lowest in participants over 60 years old. Specific saliva samples were identified which effectively neutralised SARS-CoV-2 virus infection of epithelial cells. Our results suggest secretory IgA specific to SARS-CoV-2 can be detected in saliva following infection, an accessible sample type for testing, although titres decreased over time. Some saliva samples were able to neutralise SARS-CoV-2 infectivity against cultured epithelial cells. This data could be used to assess the risk of re-infection with SARS-CoV-2, as well as accelerate efforts to develop effective mucosal vaccination with longer lasting protection.

Combined 0.2 T static magnetic field and 20 kHz, 2 V/cm square wave electric field do not affect supercooling and freezing time of saline solution and meat samples

Previous studies proposed that electric and magnetic fields can affect the freezing of biological tissues, including meat. Yet, improved freezing through sole magnetic or combined electro-magnetic field exposure is disputed. Also, as previous studies typically tested very small sample dimensions, it is unclear if the reported effects are transferrable to larger product sizes that are relevant to commercial food freezing. Here we aimed at reassessing previous findings by constructing and testing a scaled-up setup for applying electric and magnetic fields during freezing. Importantly, our setup replicates key technical aspects of previous electro-magnetic freezer designs. We modeled and measured the spatial distribution of electric and magnetic fields generated by this setup. We then studied possible effects of field exposure on freezing of two different volumes of saline water and of meat. We tested four different field treatments: sole magnetic and electric field exposure, a combination of both and a control without altered field exposure. We show that the 20 kHz square wave electric field was largely homogenous, while the static 0.2 T magnetic field was not. We found that none of the field treatments altered freezing dynamics of the three tested sample types. Our findings, hence, do not support previous data obtained with similar electro-magnetic field freezer setups. We discuss how our study that uses very distinct field parameters, may inform the general discussion on the effectiveness of electro-magnetic field exposure during food freezing. • A reproducible design for electromagnetic field-assisted freezing is presented. • Freezing of saline and meat was not influenced by pulsed DC electric and/or static magnetic fields. • Generating strong, homogeneous fields poses a critical challenge to magnetic-field assisted food freezing. • Electrostatic-assisted food freezing is still in an early research state.

Freezing and Thawing of D2O/Sand Mixtures Investigated by Neutron Diffraction

Evolution ice diffraction patterns in mixtures of D2O with quartz sand of three different grain coarseness (100–600, 300–800 and 600–1200 μm) were studied under various temperature regimes by means of neutron diffraction method. The studied structural parameters and characteristics involved the phase composition of specimens, Ih D2O ice lattice parameters, and crystallographic texture of the present phases. Variations in the ice crystallographic texture during the repeated freezing and thawing were observed for all tested sample types, showing an intermittent enhancement of ice and quartz texture indices accompanying the start of specimens cooling. Formation of radial internal stresses is demonstrated by the observed split of (002) and (100) diffraction maxima of ice. Estimated mean internal radial stress values are calculated.

Characterisation of enterovirus RNA detected in the pancreas and other specimens of live patients with newly diagnosed type 1 diabetes in the DiViD study

Aims/hypothesisThe Diabetes Virus Detection (DiViD) study is the first study to laparoscopically collect pancreatic tissue and purified pancreatic islets together with duodenal mucosa, serum, peripheral blood mononuclear cells (PBMCs) and stools from six live adult patients (age 24–35 years) with newly diagnosed type 1 diabetes. The presence of enterovirus (EV) in the pancreatic islets of these patients has previously been reported.MethodsIn the present study we used reverse transcription quantitative real-time PCR (RT-qPCR) and sequencing to characterise EV genomes present in different tissues to understand the nature of infection in these individuals.ResultsAll six patients were found to be EV-positive by RT-qPCR in at least one of the tested sample types. Four patients were EV-positive in purified islet culture medium, three in PBMCs, one in duodenal biopsy and two in stool, while serum was EV-negative in all individuals. Sequencing the 5′ untranslated region of these EVs suggested that all but one belonged to enterovirus B species. One patient was EV-positive in all these sample types except for serum. Sequence analysis revealed that the virus strain present in the isolated islets of this patient was different from the strain found in other sample types. None of the islet-resident viruses could be isolated using EV-permissive cell lines.Conclusions/interpretationEV RNA can be frequently detected in various tissues of patients with type 1 diabetes. At least in some patients, the EV strain in the pancreatic islets may represent a slowly replicating persisting virus.Graphical abstract

Mechanical properties of spinal cord grey matter and white matter in confined compression

To better understand the link between spinal cord impact and the resulting tissue damage, computational models are often used. These models typically simulate the spinal cord as a homogeneous and isotropic material. Recent research suggests that grey and white matter tissue differences and directional differences, i.e. anisotropy, are important to predict spinal cord damage. The objective of this research was to characterize the mechanical properties of spinal cord grey and white matter tissue in confined compression.Spinal cords (n = 12) were harvested immediately following euthanasia from Yorkshire and Yucatan pigs. The spinal cords were flash frozen (60 s at -80 °C) and prepared into four types of test samples: grey matter axial, grey matter transverse, white matter axial, and white matter transverse. Each sample type was thawed, and subsequently tested in confined compression within 6 h of euthanasia. Samples were compressed to 10% strain at a quasi-static strain rate (0.001/sec) and allowed to relax for 120 s. A quasi-linear viscoelastic model combining a first-order exponential with a 1-term Prony series characterized the loading and relaxation responses respectively. The effect of tissue type (grey matter vs. white matter), direction (axial vs. transverse), and their interaction were evaluated with a two-way ANOVA (p < 0.05) with peak stress, aggregate modulus, and relaxation time as dependent variables.This study found grey matter to be 1.6–2 times stiffer than white matter and both grey and white matter were isotropic in compression. These findings should be emphasized when studying SCI biomechanics using computational models.

Analysis of the Maximum Heat Release Rate in Accordance with the Test Method of the Flame Retardant Performance for Pipe Insulation

In this study, the heat release rate of pipe insulation is analyzed by considering the installation status in accordance with the standards ISO 20632 and NFPA 274. The flame retardation rate was evaluated for six types of test samples: polyethylene foam covered with beaten silver (PE(S)), PE foam tapped (PE(N)), elastomeric closed cell thermal insulation (rubber), Japanese PE foam (PE(J)), Japanese polyurethane foam (PU(J)), and Japanese styro form (ST(J)) by EN 13501-1 and fire growth curve. The results show that PU(J), PE(J), and PE(N) were Class E and ultra-fast, NFPA 274 test standards for Class D and Fast, and PE(S) by ISO 20632 were Class C and Slow, and Rubber and ST(J) were Classes and Low. However, the changes in the time-averaged maximum heat release rate for each test standard (ISO 20632 and NFPA 274) to evaluate the flame retardation rate differed among identical materials. This means that the fundamental study is necessary to analyze the more accurate reasons.

Experimental research on assembly section stiffness and bending stiffness for sodium-cooled fast reactor

China Fast Reactor (CFR) is under construction, and the section stiffness and bending stiffness of CFR assemblies remain unknown and need to be investigated to support the core restraint system design and reactivity safety assessment. In this study, assembly compression tests were performed with three types of test samples. With the compression load varying from 0 to 6 kN, the compressive deformations were measured and the section stiffness were obtained. In assembly bending tests, there were two types of assemblies considering different spike clearances, and the horizontal loads from 400 N to 1900 N were applicable to the upper-load-pad, lower-load-pad and mid-fissile-region level of the assemblies. Assembly deflections were measured and correlations for the load-deflection ratio were proposed. Comparison of theoretical and experimental bending stiffness were carried out, which indicated that the spike clearance has to be taken into consideration in the assembly deformation analysis codes.

Discriminative Multi-View Subspace Feature Learning for Action Recognition

Although deep features have achieved the state-of-the-art performance in action recognition recently, the hand-crafted shallow features still play a critical role in characterizing human actions for taking advantage of visual contents in an intuitive way such as edge features. Therefore, the shallow features can serve as auxiliary visual cues supplementary to deep representations. In this paper, we propose a discriminative subspace learning model (DSLM) to explore the complementary properties between the hand-crafted shallow feature representations and the deep features. As for the RGB action recognition, this is the first work attempting to mine multi-level feature complementaries by the multi-view subspace learning scheme. To sufficiently capture the complementary information among heterogeneous features, we construct the DSLM by integrating the multi-view reconstruction error and classification error into an unified objective function. To be specific, we first use Fisher Vector to encode improved dense trajectories (iDT+FV) for shallow representations and two-stream convolutional neural network models (T-CNN) for generating deep features. Moreover, the presented DSLM algorithm projects multi-level features onto a shared discriminative subspace with the complementary information and discriminating capacity simultaneously incorporated. Finally, the action types of test samples are identified by the margins from the learned compact representations to the decision boundary. The experimental results on three datasets demonstrate the effectiveness of the proposed method.

Evaluation of the Siemens ADVIA Centaur high-sensitivity cardiac troponin I assay in serum

BackgroundInternational recommendations on high-sensitivity cardiac troponin (hs-cTn) testing recommend that laboratories select only one sample type for testing. We evaluated the Siemens ADVIA Centaur hs-cTnI assay in serum and thereby provide information on imprecision, long-term storage stability, freeze-thaw stability, method comparison to other hs-cTnI assays, and clinical performance. MethodsPatients with chest pain onset <6 h who already had Roche hs-cTnT, Beckman hs-cTnI and Abbott hs-cTnI results recorded and had non-thawed and frozen serum aliquots formed the study population (n = 134 patients with 305 serum aliquots obtained at either 0, 3 or 6 h stored below -70 °C since 2003) for measurement with the Siemens hs-cTnI assay in 2018. Receiver-operating characteristic curve analyses for myocardial infarction (MI) using the highest obtained hs-cTn concentration was performed. Additional comparison testing on serum samples stored frozen (at -70 °C for <1 month in 2018) for the Siemens and Abbott hs-cTnI assays were performed, as well as precision testing in serum pools and freeze-thaw stability testing. ResultsThe Siemens hs-cTnI assay had an area under the curve (AUC) of 0.978 (95%CI: 0.937–0.996) for MI in the study cohort (Roche hs-cTnT AUC = 0.965 and Abbott AUC = 0.973). The Siemens hs-cTnI assay yielded higher cTnI concentrations than the other hs-cTn assays, with the same proportional bias (slope = 1.4) between the Siemens and Abbott hs-cTnI assays obtained from serum samples collected in 2003 and 2018. Over 3 months, a low serum pool of 3.5 ng/l achieved a CV of 20% (SD = 0.7, n = 42) and a high serum pool of 820 ng/l achieved a CV of 2.3% (SD = 20, n = 42). Three different serum pools recovered within 10% from baseline concentration after 5 freeze-thaw cycles for the Siemens hs-cTnI assay. ConclusionsIn serum, the Siemens ADVIA Centaur hs-cTnI assay had excellent clinical performance for MI in an early chest pain onset population, acceptable precision at normal and highly elevated cTnI concentrations, long-term storage stability (15 y storage below -70 °C) and acceptable freeze-thaw stability, all of which supports serum as an acceptable sample type to use in clinical studies and in clinical practice.

A Scalable Pipeline for High-Throughput Flow Cytometry

Flow cytometry (FC) provides high-content data for a variety of applications, including phenotypic analysis of cell surface and intracellular markers, characterization of cell supernatant or lysates, and gene expression analysis. Historically, sample preparation, acquisition, and analysis have presented as a bottleneck for running such types of assays at scale. This article will outline the solutions that have been implemented at Novartis which have allowed high-throughput FC to be successfully conducted and analyzed for a variety of cell-based assays. While these experiments were generally conducted to measure phenotypic responses from a well-characterized and information-rich small molecular probe library known as the Mechanism-of-Action (MoA) Box, they are broadly applicable to any type of test sample. The article focuses on application of automated methods for FC sample preparation in 384-well assay plates. It also highlights a pipeline for analyzing large volumes of FC data, covering a visualization approach that facilitates review of screen-level data by dynamically embedding FlowJo (FJ) workspace images for each sample into a Spotfire file, directly linking them to the metric being observed. Finally, an application of these methods to a screen for MHC-I expression upregulators is discussed.

Accurate measurement of airborne biological particle concentration based on laser-induced fluorescence technique

We develop a biological particle counter based on laser-induced fluorescence for accurate measurement of biological particle concentrations in the air. Pure water, NaCl particles, polystyrene latex spheres, and standard fluorescent particles are used as media to evaluate the performance of the counter. Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa are used as representative biological particles to evaluate the measurement accuracy of the counter. In experiments, the results measured by the counter are consistent with he results obtained with the culture method; For each bacterium, good linear agreement is observed between the two results, and the values of the coefficient R2 are all more than 0.97. Because of particle superposition errors, system error, etc., at low concentrations, the number measured by the counter divided by the number measured by the culture method, η = Ncounter/Nculture, is larger than that at high concentrations. For same type of test sample, although the distribution is different, the η values at same concentrations are similar. Finally, the repeatability of the two methods is tested. The results obtained using the counter are found to be more stable, with a relative standard deviation (RSD) of 8.14%; this is less than the RSD of 15% obtained using the culture method.

Control of radon emanation at determination of activity concentration index for building materials

Radon emanation is a well-known source of uncertainty at determination of activity concentration index for building materials and NORM. To reduce this uncertainty both radon emanation coefficient of the sample material and radon leakage from the measuring container should be considered. Two different methods (the rapid method and precise method, which requires to keep the sample sealed for at least three weeks), which are based on the use of only gamma-ray spectrometer, are proposed for testing radon emanation. Both methods also allow simultaneous determination of the specific activity of radium and an assessment of radon exhalation rate from the surface of the finished building products. In addition, the method for determination of radon leakage from the container is proposed. The reliability of the sealing methods of containers is compared and standard PET-flasks with a high radon-tightness are offered. The criteria to control radon leakage and radon emanation coefficient are given for three types of test samples: (a) building materials, (b) natural materials of mineral origin (sands, clays, rocks etc.), and (c) artificial materials, such as absorbents, filters, radioactive wastes. A simplified screening test to control activity concentration index for building materials without a need to keep the sample sealed before the measurement is proposed.

Electrical characterization of extruded DC cable insulation — The challenge of scaling

HVDC cable technology with extruded insulation systems have been growing rapidly in the recent years. Different insulation concepts including crosslinked or thermoplastic polymers with or without particle fillers have been studied intensively. The DC conduction in the insulation systems is one of the most important mechanism in dielectric physics; therefore reliable and representative methods are needed to characterize it. In the development process of HVDC cables from small scale plaque sample experiments to full scale cable testing, high field DC conductivity measurement and space charge measurement with the pulsed electro-acoustic (PEA) method are common. These two methods provide two different views into the conduction physics in the insulation and provide different types of information. But both of these methods have their own drawbacks and limitations which are important to keep in mind when choosing measurement methods in different stages of the development process. Another important aspect is the inherent differences between the different types of test samples. Thin pressed plaque samples are easy to produce and require less complicated testing equipment than experimental cables but there are major differences which should not be ignored. In this paper, the principles, advantages and limitations of DC conductivity and PEA measurements on samples of different scales are described and their relevance to the evaluation process is discussed. Some of the less discussed challenges of these measurement methods on different objects are discussed in more details and recommendations are made for obtaining more useful results.

Rheological properties of dextrin-riboflavin solutions under thermal and UV radiation effects

The combination of saccharides and UV sensitive chemical molecules in the solution form has been in the interest of medicine for treating medical complications and imaging techniques due to their remarkable properties under UV radiation. Therefore, two samples of dextrin based riboflavin solutions containing 10wt% of dextrin content and 0.1wt% of UV sensitive riboflavin content were prepared at the room temperature. In order to understand how UV radiation affects the viscosity of prepared solutions at various temperatures, one of the prepared samples was protected from light while another sample was radiated to UV at a biologically harmless wavelength where the absorbance peaks are obtained by UV/visible spectroscopy. Dynamic viscosity measurements of UV-radiated and un-radiated solutions for different temperatures were performed with constant velocity where the most reliable torque is shown. It was understood that application of UV radiation increased the viscosity value of radiated sample at the room temperature, however; it did not alter the fluid types of test samples. Fluid type of all test solutions was found to be non-Newtonian dilatant fluids as the shear stress vs. shear rate curves of solutions reliably obeyed Ostwald-de-Waele equation. Flow type of all solutions was classified as shear thickening fluids (STF) since power law consistency coefficient (n) of Ostwald-de-Waele equation was found to be >1 (n>1). Based on this experimental outcome, the effect of UV radiation on shear thickening behavior of the solutions which include low viscous biocompatible solutions was studied for the first time. Thermal behavior of all test solutions was mathematically modeled via Arrhenius viscosity equation. The degree of STF increased and viscosity of dextrin based riboflavin solutions was found to be slightly greater than other test samples at increasing temperature values after UV radiation. As expected, viscosity values of all test samples decreased at elevated temperatures.