43 research outputs found
Methodology of Acquiring Valid Data by Combining Oil Tankers’ Noon Report and Automatic Identification System Satellite Data
Fuel consumption of marine vessels plays an important role in both generating air pollution and ship operational expenses where the global environmental concerns toward air pollution and economics of shipping operation are being increased. In order to optimize ship fuel consumption, the fuel consumption prediction for her envisaged voyage is to be known. To predict fuel consumption of a ship, noon report (NR) data are available source to be analysed by different techniques. Because of the possible human error attributed to the method of NR data collection, it involves risk of possible inaccuracy. Therefore, in this study, to acquire pure valid data, the NR raw data of two very large crude carriers (VLCCs) composed with their respective Automatic Identification System (AIS) satellite data. Then, well-known models i.e. K-Mean, Self-Organizing Map (SOM), Outlier Score Base (OSB) and Histogram of Outlier Score Base (HSOB) methods are applied to the collected tankers NR during a year. The new enriched data derived are compared to the raw NR to distinguish the most fitted methodology of accruing pure valid data. Expected value and root mean square methods are applied to evaluate the accuracy of the methodologies. It is concluded that measured expected value and root mean square for HOSB are indicating high coherence with the harmony of the primary NR data.</p
Mantle Cell Hyperplasia of Peripheral Lymph Nodes as Initial Manifestation of Sickle Cell Disease
Sickle cell disease (SCD) is a well known hemoglobinopathy with usual manifestations including anemia, hyperbilirubinemia, and
vasoocclusive complications. Despite presence of mild splenomegaly in early phase of the disease, lymphadenopathy is not an
often finding of SCD. We introduce an undiagnosed case of SCD who presented in third decade of his life with multiple cervical
lymphadenopathies and mild splenomegaly persistent for about five years. Histopathologic examination of the resected lymph
nodes showed expansion of the mantle cell layers of secondary follicles as well as several monomorphic mantle cell nodules. To
rule out possibility of a malignant process involving lymph nodes, an immunohistochemical panel was ordered which was in favor
of benign mantle cell hyperplasia. Immunoglobulin gene rearrangement study showed no clonal bands and confirmed benign
nature of the process. Respecting mild abnormalities on Complete Blood Count, peripheral blood smear was reviewed revealing
some typical sickle red blood cells as well as rare nucleated red blood cells. Solubility test for hemoglobin (HB) S was positive.
Hemoglobin electrophoresis confirmed diagnosis of homozygous HbS disease
Mantle Cell Hyperplasia of Peripheral Lymph Nodes as Initial Manifestation of Sickle Cell Disease
Sickle cell disease (SCD) is a well known hemoglobinopathy with usual manifestations including anemia, hyperbilirubinemia, and
vasoocclusive complications. Despite presence of mild splenomegaly in early phase of the disease, lymphadenopathy is not an
often finding of SCD. We introduce an undiagnosed case of SCD who presented in third decade of his life with multiple cervical
lymphadenopathies and mild splenomegaly persistent for about five years. Histopathologic examination of the resected lymph
nodes showed expansion of the mantle cell layers of secondary follicles as well as several monomorphic mantle cell nodules. To
rule out possibility of a malignant process involving lymph nodes, an immunohistochemical panel was ordered which was in favor
of benign mantle cell hyperplasia. Immunoglobulin gene rearrangement study showed no clonal bands and confirmed benign
nature of the process. Respecting mild abnormalities on Complete Blood Count, peripheral blood smear was reviewed revealing
some typical sickle red blood cells as well as rare nucleated red blood cells. Solubility test for hemoglobin (HB) S was positive.
Hemoglobin electrophoresis confirmed diagnosis of homozygous HbS disease
DeePLT: Personalized Lighting Facilitates by Trajectory Prediction of Recognized Residents in the Smart Home
In recent years, the intelligence of various parts of the home has become one
of the essential features of any modern home. One of these parts is the
intelligence lighting system that personalizes the light for each person. This
paper proposes an intelligent system based on machine learning that
personalizes lighting in the instant future location of a recognized user,
inferred by trajectory prediction. Our proposed system consists of the
following modules: (I) human detection to detect and localize the person in
each given video frame, (II) face recognition to identify the detected person,
(III) human tracking to track the person in the sequence of video frames and
(IV) trajectory prediction to forecast the future location of the user in the
environment using Inverse Reinforcement Learning. The proposed method provides
a unique profile for each person, including specifications, face images, and
custom lighting settings. This profile is used in the lighting adjustment
process. Unlike other methods that consider constant lighting for every person,
our system can apply each 'person's desired lighting in terms of color and
light intensity without direct user intervention. Therefore, the lighting is
adjusted with higher speed and better efficiency. In addition, the predicted
trajectory path makes the proposed system apply the desired lighting, creating
more pleasant and comfortable conditions for the home residents. In the
experimental results, the system applied the desired lighting in an average
time of 1.4 seconds from the moment of entry, as well as a performance of
22.1mAp in human detection, 95.12% accuracy in face recognition, 93.3% MDP in
human tracking, and 10.80 MinADE20, 18.55 MinFDE20, 15.8 MinADE5 and 30.50
MinFDE5 in trajectory prediction
Dicer Gene Expression as a Prognostic Factor in Acute Lymphoblastic Leukemia and Chronic Lymphocytic Leukemia in Fars Province
Alterations in the expression of microRNAs (miRNAs) have been
proposed to play a role in the pathogenesis of acute lymphoblastic
leukemia (ALL) and chronic lymphocytic leukemia (CLL).
Dicer is one of the main regulators of miRNA biogenesis, and
deregulation of its expression has been indicated as a possible
cause of miRNA alterations observed in various cancers. Our
aim was to analyze the expression of the Dicer protein and its
relationship with ALL and CLL. This cross-sectional study
was performed from 2010 to 2012 in Shahid Faghihi Hospital,
Shiraz, Iran. In this study, 30 patients with CLL, 21 patients
with ALL, 10 child healthy donors, and 19 adult healthy donors
were recruited. The patients’ samples were checked via flow
cytometry, immunohistochemistry, and immunocytochemistry.
The controls’ samples were also examined in the hematology
ward. Total RNA was extracted from the bone marrow and
peripheral blood samples of the patients and controls. Then,
reverse-transcription polymerase chain reaction was used
to estimate the level of Dicer miRNA. The outcomes of the
expression analysis of Dicer revealed statistically significant
differences between the ALL patients/child healthy controls
(mean±SD, 0.19±0.28 vs. 0.73±0.12; P<0.001) and the CLL
patients/adult healthy controls (mean±SD, 0.24±0.25 vs.
0.41±0.28; P=0.033). This is the first piece of evidence showing
that the expression of the Dicer gene greatly decreased in the
patients with ALL in comparison to the child controls. The
expression of the Dicer gene was also downregulated in the
patients with CLL compared to the adult controls. Given the
above findings, the expression of Dicer may play an important
role in the progression and prognosis of these diseases
MYCN Gene Copy Number Status Detected by FISH Method and Its Correlation with Outcome and Clinicopathological Variables in Childhood Neuroblastoma
Background: Neuroblastoma is the most common extracranial solid tumor in children. MYCN gene amplification (MNA) is an independent prognostic factor for rapid tumor progression and poor prognosis, regardless of age and clinical stage. Gain of the MYCN gene locus on the short arm of chromosome 2 can also be found in neuroblastoma.Method: In this retrospective descriptive analysis of genetic alterations in neuroblastoma tumor samples, both before and after standard chemotherapy, we examined the MYCN gene copy number status in 20 neuroblastic tumor samples using the fluorescence in situ hybridization (FISH) method. We also evaluated its relationship with clinical variables and tumor maturation after standard chemotherapy treatment. Additionally, we compared disease outcomes among different MYCN copy number categories.Results: Among the tumor samples, four (25%) exhibited increased MYCN copy numbers, 20% showed MYCN amplification, and 5% displayed MYCN gain. We observed decreased survival rates in advanced stages of neuroblastoma. Furthermore, in male patients, we noted an association between increased MYCN copy number and metastatic tumors.Conclusion: We found that increased MYCN copy number is moderately associated with an immature phenotype and correlated with lower event-free survival. However, we did not detect a statistically significant difference
Conventional Cytogenetic Abnormalities in Plasma Cell Myeloma and Their Prognostic Effect: A Single Center Experience in the Middle East
Background: Given the prognostic importance of cytogenetic aberrations in plasma cell neoplasms, the present retrospective study was conducted to analyze cytogenetic abnormalities in plasma cell myeloma cases in a single center in the Middle East.
Method: In this retrospective cross-sectional study, we selected 42 patients referred to the molecular and cytogenetic department from 2013 to 2016 for initial assessment by immunohistochemical, flow cytometric, and cytogenetic studies. Chromosomal analysis was performed after a 72-hour unsynchronized culture and Giemsa banding; the result was reported according to ISCN 2016.
Results: 32.5% of the patients showed an abnormal karyotype, of whom 53.8% were hyperdiploid and the rest were assigned to the non-hyperdiploid group. The gain of 1q and monosomy 13/ deletion 13q were the most common structural abnormalities accounting for 38.4% and 30.7%, respectively. t(11;14) was the only detected 14q32 rearrangement observed in 15.4% of the cases. The mean survival time in normal, hyperdiploid, and non-hyperdiploid groups was 29.5±1.7, 16.6±2.9 and 6.1±2.1 months, respectively.
Conclusion: Cytogenetic abnormalities of plasma cell myeloma in this center were relatively similar to previous reports in the literature; moreover, hyperdiploidy was the most common cytogenetic aberration. As no cryptic aberration could be identified, we recommend the use of more precise techniques such as FISH in addition to conventional G banding to detect cryptic aberrations. Survival of the non-hyperdiploid group was the worst
The Very Low Frequency of Epstein-Barr JC and BK Viruses DNA in Colorectal Cancer Tissues in Shiraz, Southwest Iran
Viruses including Epstein-Barr virus (EBV), JCV and BKV have been reported to be associated with some cancers. The association of these viruses with colorectal cancers remains controversial. Our objective was to investigate their infections association with adenocarcinoma and adenomatous polyps of the colon. Totally, 210 paraffin-embedded tissue specimens encompassing 70 colorectal adenocarcinoma, 70 colorectal adenomatous and 70 colorectal normal tissues were included. The total DNA was extracted, then qualified samples introduced to polymerase chain reaction (PCR). The EBV, JCV and BKV genome sequences were detected using specific primers by 3 different in-house PCR assays. Out of 210 subjects, 98 cases were female and the rest were male. The mean age of the participants was 52 ± 1.64 years. EBV and JCV DNA was detected just in one (1.42%) out of seventy adenocarcinoma colorectal tissues. All adenomatous polyp and normal colorectal tissues were negative for EBV and JCV DNA sequences. Moreover, all the patients and healthy subjects were negative for BKV DNA sequences. The results suggested that EBV and JCV genomes were not detectable in the colorectal tissue of patients with colorectal cancer in our population. Hence, BKV might not be necessitated for the development of colorectal cancer. The findings merit more investigations
Disseminated Peritoneal Leiomyomatosis
Leiomyomatosis peritonealis disseminata is a very rare condition characterized by the development of multiple smooth muscle-like nodules in the peritoneal cavity. It is associated with increased serum levels of gonadal steroids. The present report describes a 29-year-old patient underwent transabdominal hysterectomy and Bilateral Salpingo oophorectomy six years ago because of leiomyomatosis peritonealis disseminata. After six years she referred to us again because of retroperitoneal fibroma, another rare entity, during hormone replacement therapy inspite of lack of uterus and previous castratio