Color Spots Research Articles

Taxonomic revision of Physalis species (Solanaceae) in Korea

The records of various Physalis species in Korea along with unclear descriptions and the use of multiple Korean names for a single species have led to confusion with regard to species identification in this genus. Therefore, the aim of the present study was to identify and characterize Physalis species distributed in the Republic of Korea through a literature review, specimen observations, and field surveys. Five Physalis species were found to be distributed in the Republic of Korea: P. angulata, P. lagascae, P. longifolia, P. philadelphica, and P. pubescens. Additionally, it was confirmed that part of P. fauriei and P. repens can be considered to be synonyms of P. lagascae, whereas the other part of P. fauriei is regarded as synonyms of P. pubescens. The species can be distinguished based on their life forms, presence of rhizomes, leaf serration depth, arrangement of hairs on the calyx, corolla diameter and spot color, and fruit shape and ridge number. Physalis angulata and P. pubescens are distributed in various regions, primarily in the southern and western parts of the Republic of Korea. In contrast, P. lagascae is found exclusively in limited regions of Jeju-do, Chungcheongbuk-do, and Gangwon-do, with P. longifolia and P. philadelphica found only in Yeongwol-gun of Gangwon-do. This study provides revised descriptions and an identification key along with photographs and distribution information for Physalis species in the Republic of Korea.

Исследование линейности цветовосприятия человека в графическом интерфейсе систем управления

The work is aimed at studying the process of human perception of visual information in conditions of interaction with a certain interface. The authors describe experimental research of the linearity of human colour perception in the graphical interface of control systems when observing colour pictograms in a conditional interface. To analyze the mechanism operation of the visual information perception, an information model of visual perception is used. Features of human perception of visual information can be of both an individual nature associated with a specific individual, and an external nature associated with the systemic interference of the operator’s direct interaction with the interface. The paper defines the factors of the study and describes the methodology for preparing stimulus material using the Processing programming language. As a tool for conducting the experiment, a software and hardware complex recording oculomotor activity Eye-tracker SMI RED 250 is used. The importance of creating effective user interfaces for control systems of complex objects and insufficient study of adapting interfaces to the features of human perception of visual information at the perceptual level of awareness determine the relevance of the study. The means of mathematical statistics process the obtained parametric data of the template for examining the stimulus material. The results got in the experiment allow concluding that the mechanism of human visual information perception, when the colour spot brightness decreases, remains sensitive to yellow colour the longest.

The impact of mental health and psychological stressors on menstrual cycle modulation: exploring the influence of age and hormonal contraceptives.

The objective of this study was to analyze the influence of a stressor, a period of the Covid-19 pandemic when there were no vaccines available yet, on the psychological state of women aged 18 to 45 years; as well as the influence of mental health on the menstrual cycle, considering the influence of age and hormonal contraceptives. Online questionnaire using the Google Forms platform was used. There is a high prevalence of the onset of new psychosocial symptoms. Moreover, most women reported some type of change in their menstrual cycles. The women who were using hormonal contraceptives demonstrated a higher frequency of spotting and menstrual color alterations, while women without hormonal contraceptives demonstrated a higher frequency of cycle duration and menstrual odor alterations. Women without hormonal contraceptives were more susceptible to the development of psychosocial symptoms. Younger adult women were more affected by menstrual changes and psychosocial symptoms. Close to 90% of women who reported several psychosocial symptoms had changes in their menstrual cycles. These data suggest the impact of stressors, such as a period of the pandemic, on mental health and menstrual cycles, and younger adult women can be more susceptible. This reflects the relationship between mental and reproductive health.

Biodegradation effects of three Aspergillus species on iron-based oxides (Hematite − Goethite) in paint layer in oil paintings

The inorganic colour layer based on iron oxide is affected by microorganisms (fungi) and leads to its deterioration due to feeding on the mineral elements through the chemical composition of the colour in the presence of a suitable environment (medium). Damage occurs as a result of heavy metal elements being removed from the colour, leading to a defect in the chemical composition and the fading of the colours. The current study showed the effect of the different types of the most common fungi on oil paintings (Aspergillus flavius, Aspergillus fumigatus and Aspergillus niger) after cultivating the different types of fungi and obtaining pure colonies for each fungus separately and conducting a fungal infection on experimental samples with preparing the old techniques, coloured with hematite red and goethite yellow. Each colour is mixed with different proportions of linseed oil (1, 2, 3). They were aged artificially and incubated at a temperature of 262+- degrees and examined periodically until the fungi appeared on the surface in the form of colour spots ranging from very dark (severe infestation) to light (low infestation). The change in chemical composition was measured by Raman and EDX analyses of the samples before and after infection. Fungi showed the appearance of spoilage products from metal sulfides and metal carboxylates. The iron oxide ion decreased in both the red and the yellow colours, leading to a change after the fungal infection. Examination of the morphological surface using SEM, USB and measurement of colour change showed the change in the red colour more than the yellow and scattering of green and black colour dots on the surface of the sample. Correlation and Simple Linear Regression were applied for each colour before and after besides both colours together. It was found that these colours appeared around some of the fungal colonies as a result of the activities. Fungal species of some strains reduced Fe+3 to Fe+2 . This provides new insights into the role of microorganisms in the deterioration of painted surfaces.

Genetic analysis and molecular validation of gene conferring petal spot phenotype in interspecific crosses of cotton

Cotton (Gossypium species) has received considerable interest from the geneticists, cytologists and evolutionary biologists since the last more than a century. Here, we explore the genetics of petal spot in the interspecific derivatives involving tetraploid and diploid cottons; and confirm the location of gene governing petal spot phenotype on chromosome A7 by demonstrating co-segregation of SSR marker NAU 2186 with petal spot phenotype. The presence of petal spot was observed to be dominant over its absence. Petal spot inheritance showed significant deviation from the expected Mendelian ratio in all the segregating populations indicating segregation distortion. The distortion was biased towards the hirsutum parent which has important implications from introgression point of view. We also report a strong association between petal spot and petal margin coloration phenotypes. Extant American cotton varieties generally lack petal spot and margin coloration phenotypes. These petal characteristics can serve as morphological markers during germplasm characterization.

Microscale heterogeneity of phosphorus species associated with secondary mineral phases in the B horizons of two boreal Podzols

Poorly crystalline Al and Fe minerals have high sorption capacities for phosphate anions. However, there is still uncertainty about the molecular-level distribution of phosphorus (P) species between Al and Fe mineral phases, which can be relevant for bioavailability. The present study employed synchrotron X-ray microscopic techniques to distinguish between Al- and Fe-associated P phases in two Podzol B horizons (Flakaliden and Skogaby). First, P species were clustered into major groups depending on the main element association (Al-P, Fe-P, Ca-P + organic P) according to the color of P-containing spots in the tricolor μ-XRF quantitative maps that combined P, Al, and Fe fluorescence intensities. Second, the results were analyzed using quantitative linear combination fitting (LCF) of the P K-edge μ-XANES spectra. Third, in cases when the results diverged, a careful visual comparison between the diagnostic features of the XANES spectra of the samples and the reference standards was made. In 45 of 54 investigated spots, the color method and XANES-LCF produced consistent results. In 2 spots where the results were inconsistent, the diagnostic features of the XANES spectra agreed with the color method but not with XANES-LCF. In 39 of the 47 spots where the major P phase could be identified, Al-P was found to predominate. Ca-P was the major phase in 5 spots, Fe-P in 2, and organic P in 1. Most of the Al-P probably consisted of PO4 adsorbed to imogolite-type materials (ITM), as evidenced by oxalate extraction and Fourier Transform Infrared (FTIR) spectroscopy, although at Skogaby, adsorbed organic P may have played an important additional role. Overall, the P speciation showed substantial spatial heterogeneity, particularly in the upper B horizon of the Skogaby soil and in the lower B horizon of the Flakaliden soil. In conclusion, Al-P, particularly ITM-adsorbed PO4, is the main P phase in the B horizons of the studied Podzols, which may have implications for bioavailability as ITM is more easily dissolved than Fe oxides. Also, the combination of XANES-LCF, colors of the μ-XRF maps, and diagnostic features of the XANES spectra led to robust estimates of the major P phases in soil microsites.

Chilly Leaves Diseases Identification Using MobileNet V2 Deep Learning Model

This work describes the application of pre-trained deep learning models (Mobile Net V1, Mobile Net V2) to image classification issues such as plant disease diagnosis. Regarding this, We provide a deep learning-based feature extraction technique for classifying leaf diseases of cold plants and identifying plant species. The automated diagnosis of plant diseases has brought about a transformation in the agriculture industry. Our main goal is to use neural networks for agricultural disease diagnosis and treatment. Plant diseases seriously impair the agriculture industry's financial standing. Managing an illness is a challenging endeavor. Usually, infections appear on the leaves or stems of plants, as do their symptoms, which include colorful spots or steaks. Compared to human labor, image processing technology enables faster and more accurate illness detection. Image processing is critical in the detection of plant diseases because it gives the best results with the least amount of human intervention. Deep learning helps to diagnose diseases and provide focused treatment.

Study of print suitability of environment-friendly plastics using flexography printing

Environmental-friendly plastics (EFP) are new alternatives of fossil-based plastics. The EFP family mainly constitutes bio-plastics/bio-attributed plastics and post-consumer recycled plastics (PCR). EFP contributes around 10% of total plastics production in global plastic production. Presently EFP are mostly used in grocery bags, bin liners, compostable garbage bags and single-use plastics with single or spot color printing. Multi-color printing can add value or open new horizons for these materials, leading to high-value applications. It can also be used for high-speed printing or flexible packaging applications. Plastics available in this category come from both fossil-based and bio-based sources. Fossil-based bioplastics has almost similar degree of print suitability but materials coming from bio-based sources are yet to be explored for print suitability, especially with high-speed multi-color printing machines. Flexographic printing is known for high-quality and high-speed printing on different substrates, including paper, conventional plastics and fossil-based bio-plastics. The advantage of having a common impression cylinder (CIC) arrangement and the requirement of less pressure during printing makes it suitable for consideration for printing on EFP. Hence, this study, print suitability of EFP using flexography printing, is an attempt to explore the mutual compatibility of these substrates and printing process, which will prove to be a boon in the future for establishing EFP as a strong substitute for replacing conventional plastics.

Effect of high-density fat combined with adipose stem cell glue on the success rate of facial filling and its clinical value.

Facial fat grafting is a popular cosmetic procedure, and experts are increasingly endorsing the use of high-density fat with adipose stem cell glue for better results. This study aims to explore the effect of high-density fat combined with adipose stem cell glue on the success rate of facial filling and its clinical value. We conducted a randomized trial with 100 patients who underwent facial fat transplantation between August 2020 and August 2022. They were divided into two groups: a control group receiving traditional Coleman fat transplantation and an observation group receiving high-density fat with adipose stem cells. In the observation and control groups, the excellent and good rate was 98.00 and 80.00%. After 3 months of treatment, the thickness of frontal subcutaneous fat and temporal subcutaneous fat in the observation group was higher (P < 0.05). Observation group retention of fat transplantation was noticeably higher 3 months after treatment (P < 0.05). Three months after treatment, the VISIA (facial imaging system) scores of facial color spots, facial pores and facial wrinkles in the observation group were lower (P < 0.05). After treatment, both groups indicated noticeable improvements in physiological functions, health status, social function, mental health, and somatic diseases compared to before treatment. Notably, the observation group had higher scores (P < 0.05). The observation group had a lower complication rate (4.00% vs. 22.00%) and higher satisfaction rate (98.00% vs. 86.00%) than the control group. Using high-density fat combined with adipose stem cell glue for facial fat grafting yields superior results, reduces complications, and boosts patient satisfaction compared to traditional methods. We have complied with all relevant ethical regulations with regard to the use of stem cells.

Effect of phytic acid on the appearance of yellow alkaline noodles: Color and dark spots

Phytic acid (PA) could increase the yellowness value of yellow alkaline noodles (YAN), as well as significantly reduce the generation of dark spots on the surface of YAN by suppressing polyphenol oxidase (PPO) browning. In this paper, the inhibition mechanism of PA on PPO browning was mainly studied. In the produced YAN sheets, the PPO activity and free quinone content showed a gradual decrease with increasing PA addition, while the free phenol content gradually increased. This indicated that PA could inhibit PPO browning and was an effective browning inhibitor. In the constructed in vitro PPO solution, the anti-PPO browning mechanism of PA was mainly through chelating Cu2+ in the active center. The DPPH radical scavenging rate of PA was measured, and it was found that PA could inhibit PPO browning, which was related to the antioxidant capacity. The effect of PA on browning products was analyzed using HPLC, and the results of the study showed that PA could reduce the peak area of the browning products, thus reducing the generation of dark spots.

Digital image determination of copper in food and water after preconcentration and magnetic tip separation for in-cavity desorption/color development

A new analytical method for measuring copper in food and water was developed and validated, employing a solid-phase extraction (SPE) technique combined with digital-image-based (DIB) detection. A novel magnetic adsorbent of zinc ferrite/Citrullus colocynthis biochar (ZF@C.BC) was used to preconcentrate copper. A magnetic tip was used to separate the copper-loaded adsorbent from the extraction medium and to dispense it to the DIB plate. In-situ desorption and development of the spot color with iodide-starch reagent were carried out, and a digital image of the developed spots was captured using a smartphone and processed using ImageJ software. The copper adsorption capacity was 91.3 mg g−1. Desorption was effected using a 0.3 mol L-1 hydrochloric acid. The preconcentration factor was 300, the limit of detection was 4.8 μg L-1, the linearity was 16–600 μg L-1 and the sample throughput was 12 h−1. The developed approach was validated by analyzing food and water samples, confirming recoveries ≥ 91 % and 88 %, respectively, with RSD ≤ 8.4 %, n = 3.

An optimized capsule neural networks for tomato leaf disease classification

Plant diseases have a significant impact on leaves, with each disease exhibiting specific spots characterized by unique colors and locations. Therefore, it is crucial to develop a method for detecting these diseases based on spot shape, color, and location within the leaves. While Convolutional Neural Networks (CNNs) have been widely used in deep learning applications, they suffer from limitations in capturing relative spatial and orientation relationships. This paper presents a computer vision methodology that utilizes an optimized capsule neural network (CapsNet) to detect and classify ten tomato leaf diseases using standard dataset images. To mitigate overfitting, data augmentation, and preprocessing techniques were employed during the training phase. CapsNet was chosen over CNNs due to its superior ability to capture spatial positioning within the image. The proposed CapsNet approach achieved an accuracy of 96.39% with minimal loss, relying on a 0.00001 Adam optimizer. By comparing the results with existing state-of-the-art approaches, the study demonstrates the effectiveness of CapsNet in accurately identifying and classifying tomato leaf diseases based on spot shape, color, and location. The findings highlight the potential of CapsNet as an alternative to CNNs for improving disease detection and classification in plant pathology research.

Physalis ixocarpa: new species of genus physalis to the flora of Pakistan from mountainous region of district Shangla, Khyber Pakhtunkhwa Pakistan.

In the western mountainous region of Khyber Pakhtunkhwa Pakistan at the Shangla district, we found Physalis ixocarpa for the first time, not yet reported from Pakistan. Physalis ixocarpa was unidentified and has no ethnobotanical record in the flora of Pakistan. It is a member of family Solanaceae and having a close relation with Solanum tuberosum and Lycopersicon esculentum. The stem is prostrate with a dichotomous pattern of branches having leaves flower and fruits. Leaves are smooth, ovate and the margins of leaf blade dentation are poorly developed. The average length and width of the leaves are 6.50 and 3.61 cm respectively. P. ixocarpa grows to the length of 4-5 feet and an annual herb. The flowers of the plants are yellow in color and having purple color spots on the petals which are star-shaped. The round berry fruits are surrounded by persistent calyx and purple in color. The fruits are the 3-6cm in diameter. The plants are found in the different localities of district Shangla especially in Bar and Koz Kana. The life cycle of reporting plant is started in May and completed in November.

Physicochemical characteristics and thin layer chromatography of the essential oil of spearmint: Mentha spicata L, from western Algeria

The species chosen for this study is sweet mint, Mentha spicata L, harvested in the wilaya of El Bayadh in Algeria. The aim of this work is to highlight the plant's identification criteria, its yield in essential oil, the various physico-chemical parameters and the composition of the essential oil using different techniques (determination of several chemical indices and establishment of the list of constituents of the essential oil using chromatographic methods). The botanical study showed the presence of two types of "Lamiaceae" type secretory hairs. These secretory hairs are the histological support for the production and storage of essential oils. A study of the kinetics of the extraction yield shows that distillation is rapid from 0 to 120 minutes, when the yield reaches an optimum (1.08%). The organoleptic characteristics and physico-chemical indices obtained are in line with the standards given in the bibliography. Thin layer chromatography revealed the presence of several constituents through the appearance of several spots of different colour and Rf, three of which were identified by comparison with controls, namely menthol, cineol and carvone.

MENGUNGKAP PERISTIWA KEMATIAN KRIMINAL KASUS PEMBEKAPAN PERSPEKTIF MEDIKOLEGAL

Death is a definite thing in life that can be identified clinically in a person through observing the changes that occur in the corpse's body. The mechanism of death can be unnatural. In this case, wounds were found in the mouth, a form of mechanical smothering. Smothering can cause death, so it is an important reason to discuss and aims to reveal unnatural injuries and what events occurred. The examination method uses the principles of evidence based medicine. On external examination, bruises were found on the inner lips, both eyes (racoon eyes), left cheek, upper jaw, lower jaw, abrasions on the lips with teeth prints, and cheeks and several other bodies injuries. The lips, the tips of both fingers and the tips of the toes were bluish in color and bleeding spots were found on both inner eyelids. The conclusion of the external examination of the corpse showed that the wounds were unnatural and there were signs of strong pressure on the mouth and nose area which could cause suffocation and there were signs of cranial base trauma. These wounds were caused by blunt trauma Key words: Asphyxia, Cranial Base Fracture, smothering

A Study on DNN-Based Practical Model for Predicting Spot Color

The color of product packaging plays an important role in brand awareness and consistency. Given the importance of consistent color reproduction, the use of standardized spot colors is essential. However, the reproduction of specific spot colors in offset packaging printing involves additional processes and costs. This study presents an efficient approach to predict the color result of spot color inks in the packaging printing industry, using only the amount of ink involved in the mixing process as an input. Using a neural network-based model, our approach uses the CIEDE2000 color difference formula as a loss function to accurately estimate the final color. This method provides a simplified alternative to traditional color mixing techniques, which often involve subjective judgment and can be resource-intensive. Particularly beneficial for smaller companies, our approach reduces the complexity and cost associated with achieving accurate spot colors. The significance of this work lies in its practical application, providing a simpler, more objective and cost-effective solution for consistent color reproduction in packaging printing.

Analysis and Improvement of Static Pressure Color Spot of LCD Display Lysis and Improvement of Static Pressure Color Spot of LCD Display

Analysis and Improvement of Static Pressure Color Spot of LCD Display Lysis and Improvement of Static Pressure Color Spot of LCD Display

Impact of optical brightening agents on alkali‐based inks in packaging: A comparative study on color accuracy

AbstractAccurately assessing the color quality of printed products becomes intricate when optical brightening agents (OBAs) are introduced in papers, as diverse interactions occur among different ink pigments and papers containing OBAs due to variations in ink formulation chemistries. Specifically, alkali‐based pigments, commonly used as spot colors, are carefully formulated to ensure consistency across production batches. The presence of OBAs, which absorb ultraviolet light and emit it in the visible spectrum, significantly affects color perception and accuracy on paper when interacting with these inks. This research marks an initial investigation into how OBAs in paper influence the color accuracy of five distinct alkali‐based spot color paste inks using a Little Joe ink proofer. The research examines the physical, optical, and colorimetric characteristics of two paper samples‐one with OBA and one without‐ and analyzes the colorimetric changes occurring during the ink drying process. The results indicate that reflex blue, purple, and violet spot colors achieved acceptable delta E (ΔE00) value of below 3 on non‐OBA paper, with rubine red being on the borderline at 3.1 after 48 h. In contrast, purple, rhodamine red and violet achieved acceptable ΔE00 below 3 on high OBA paper. The distinct behavior exhibited by certain inks led to the conclusion that achieving a consistent proofing procedure across diverse alkali‐based ink formulations is impractical.

Fungal Bioagents and Botanicals Efficacy against Alternaria alternata Responsable for Leaf Blight Disease of Stevia rebaudiana

Stevia rebaudiana, a herbaceous perennial prized for its natural sweetness, has gained global acclaim and found in various parts of India including Karnataka. An exploration into leaf spot disease (caused by Alternaria alternata (FR.) Keissler) in Stevia was conducted under the conditions of southern Karnataka to identify effective management strategies. The symptoms initially manifested as petite circular spots of a light brown colour, subsequently evolving into irregular shapes ranging from dark brown to grey. Some spots maintained their circular form, exhibiting concentric rings or zones. Severely affected leaves exhibited the merging of numerous spots, forming expansive necrotic areas. On older leaves, concentric spots were predominantly found at the tips. The diameter of the leaf spots ranged from 2 to 18 mm. The conidial dimensions varied from 10 to 40 × 6-12 mm, displaying a mid to dark brown or olive-brown color. They were short-beaked, arranged in long chains, and had an oval and bean-shaped structure with 3–5 transverse septa. Considering the adverse effects of chemical fungicides, the exploration for a safer alternative to control the pathogen became a preferable option. This led to experiments involving the use of bioagents for pathogen control. The six known bioagents were evaluated by dual culture, pathogen at periphery and pathogen at the center technique to monitor antagonistic effect. The results revealed that out of all the six bioagents used, two bioagents namely Trichoderma viride (74.77%, 69.04% and 79.45%) and T. harzianum (71.25%, 59.96% and 74.78%) showed maximum growth inhibition in dual culture, pathogen at periphery and pathogen at the center methods, respectively. among the botanicals used neem (36.63%) and ginger (36.42%) found to be effective in inhibiting mycelial growth. Unraveled the strong antagonistic effect to inhibit the mycelia growth of the pathogen significantly.

Development and validation of presumptive spot test for the identification of z-drugs used in drug-facilitated crimes.

The significance and desire for preliminary testing approaches that are straightforward, quick, selective, affordable, and practical for use in the field are highlighted by the increasing enormous amounts of potentially illegal samples being seized worldwide. The "z-drugs," which include zolpidem, zopiclone, and eszopiclone, are non-benzodiazepine medications used to treat insomnia. z-drugs are short-term solutions for sleeplessness and anxiety but have a long history of abuse and misuse. The extensive list is primarily utilized for drug-facilitated crimes and drug dependence. The presumptive color spot test for z-drugs, such as zolpidem, zopiclone, and eszopiclone, has been created and validated in this study. In the preliminary identification of zolpidem, zopiclone, and eszopiclone, no color spot test has been documented as per the literature. The color spot test is the most essential and routinely used technique for identifying any unknown sample substance. The color test method was proven to provide high-quality, dependable presumptive test findings and satisfy standards for preliminary screening usage. Validation experiments demonstrate that, at room temperature, the color change is specific to the zolpidem, zopiclone, and eszopiclone classes and unaffected by the common cutting agent's presence. It was discovered that 5, 10, and 6ppm were the operational limit of detection of the sample present against the reagents 0.1% diphenyl carbazone, aqueous potassium iodoplatinate, and modified cobalt thiocyanate reagent, respectively. The color test is immediate and validated with other substances of a similar category and 10ppm was the operational limit of detection.