A simplified electrochemical model for lithium-ion batteries based on ensemble learning.

The mass transfer in lithium-ion batteries is a low-frequency dynamic that affects their voltage and performance. To find an effective way to describe the mass transfer in lithium-ion batteries, a simplified electrochemical lithium-ion battery model based on ensemble learning is proposed. The proposed model simplifies lithium-ion transfer in electrode particles with ensemble learning which ensembles discrete-time realization algorithm (DRA), fractional-order Padé approximation model (FOM), and three parameters (TPM) parabolic. The lithium-ion transfer in the electrolyte is simplified by the first-order inertial element (FIE). The results show that the proposed model achieves not only accurate lithium-ion concentration prediction in solid and electrolyte phase but also precise voltage prediction with low computational complexity.

Plasma inflammatory factors in older people predict acute kidney injury: a case-control study.

PURPOSE: To investigate whether inflammatory factors are predictors of acute kidney injury (AKI) in older people in the intensive care unit (ICU). METHODS: We performed a case-control study that included 98 older people (≥ 65 years) who were admitted to ICU from 2013 to 2017. The contents of plasma pro-inflammatory factors [interleukin (IL)-1b, IL-6, IL-8, tumor necrosis factor-a (TNF-α)] and the anti-inflammatory factor IL-10 were determined at the first day of admission. Patients were assessed based on the Kidney Disease Improving Global Outcomes (KDIGO) criteria and were divided into AKI and non-AKI (control) groups (n = 49 for each). T test was applied for differences comparisons in the levels of inflammatory factors between the two groups. Logistic regression was used to identify independent predictors of AKI. RESULTS: AKI patients had significantly elevated plasma contents of IL-6, IL-8 and IL-10, relative to the control group. A strong correlation was observed between IL-6 and IL-8 with AKI (OR 36.4 and 18.2, respectively). For each increase in the natural log unit in the levels of IL-6 and IL-8, the risk of developing AKI augmented by 36.4% and 18.2%, respectively. Moreover, the higher the tertile value of IL-6 and IL-8, the higher the risk of developing AKI. The area under the receiver operating characteristic curve for IL-6 and IL-8 was, respectively, 87% and 83% for predicting AKI. CONCLUSION: Plasma inflammatory contents of IL-6 and IL-8 can predict AKI in older people. Management of inflammatory factors should take into consideration the age of AKI patients.

Invasive mucinous adenocarcinoma with lepidic-predominant pattern coexisted with tuberculosis: a case report.

We observed a rare case of invasive mucinous adenocarcinoma (IMA) with a lepidic-predominant pattern accompanied by pulmonary tuberculosis. An 85-year-old man with repeated cough and sputum was admitted to Xinhua Hospital. T-SPOT test result was 212 pg/ml (reference value of negative is < 14 pg/ml), Mycobacterium tuberculosis culture was positive, and tuberculin skin test (PPD) was negative (skin induration < 5 mm). The patient was treated with several courses of antibiotics and anti-tuberculosis treatments. Repeated chest CT scans showed disease progression. Bronchoscopy yielded negative results. PET-CT scans showed negative results. A percutaneous lung biopsy revealed mucin-secreting cells lining the alveolar walls. IMA with a lepidic-predominant pattern was diagnosed after invasiveness was found after experimental treatments. Simultaneous occurrence of pulmonary tuberculosis and lung cancer are common; however, the present case of IMA having a lepidic-predominant pattern and coexisting with active tuberculosis has not been reported yet.

Acute pulmonary embolism with electrocardiagraphic changes mimicking acute coronary syndrome: a case report and literature review.

Acute pulmonary embolism (PE) is potentially a life threatening emergency that needs prompt management to reduce preventable deaths. Symptoms like dyspnoea and chest discomfort often lack specificity and overlap with acute coronary syndrome (ACS). Importantly, electrocardiographic changes associated with PE are reported to be variable with some ECG patterns mimicking ACS, posing problems in the differential diagnosis. More recently, precordial T wave inversion has been described to be a clue to suggest PE. However, this ECG change is more likely to present in ACS. We herein reported a case of a 78-year-old man presenting with progressive shortness of breath on exertion secondary to submassive pulmonary embolism which was initially misdiagnosed as ACS due to diffuse T wave inversion in both precordial leads V1-6 and inferior Leads II, III and aVF. Here, we discussed the diagnosis of this case and reviewed the medical literature with an emphasis on the limitations of ECG for the differentiation between PE and ACS.