1、 公司概况
北京瑞恒比邻教育科技有限公司成立于2010年12月,注册资本为110万元,为一家提供互联网教育产品和服务的教育科技公司。
公司的核心品牌为“学通数学”,核心业务是:提供面向中小学生的数学、奥数的视频、直播课程产品和服务。目前,公司已累积有超过3年的视频课程制作经验,以及1年半的在线互动直播服务经验,并和多个在线教育平台、渠道展开了合作。
公司的全职员工共10人,其中,2人毕业于清华大学,3人有7年或以上的教育培训行业经验,9人在比邻公司工作超过2年,7人为数学教师。
2、 公司文化
学通数学的核心使命为:提供学生认可的在线学习服务。
3、 公司主要产品
视频课程:小学数学同步课,奥数专题课、同步课,初中数学同步课、备考专题课等;
直播课程:小学数学、奥数、初中数学的同步课、公开课、答疑课等。
4、 重要合作伙伴
学通数学已经积极和多个开放平台、渠道展开了合作,以期双赢。
目前,主要的合作伙伴包括:全通教育、新东方在线、义方教育、传课、淘宝同学、网易云课堂、好课网、233网校等。
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A steady-state trough (Cmin,ss) value was obtained before the fifth dose was given (more than three to five estimated half-lives), and Cmin,ss = 19 mg/L (19 mcg/mL; 13 Ојmol/L). Although MRI may provide similar information without exposing the patient to ionizing radiation, many patients have contraindications to MRI (ie, those with an implanted metallic device). In a similar study, pretreatment with montelukast 10 mg/day did not protect patients when aspirin doses were increased above their threshold doses. https://dev.vwc.jv.nl/stmap_0kol124.html?carafate.zyloprim.astelin Osteomyelitis generally is an uncommon disease. Clinicians may also consider the use of IVIG, although data is limited. The patient's elimination rate constant and half-life can be computed using the following formulas: k = (ln 8.5 mg/L – ln 2.8 mg/L)/(12h – 1h) = 0.101 h and t1/2 = 0.693/0.101 h = 6.9 h. https://dev.vwc.jv.nl/stmap_0kol210.html?cutivate.forzest.gabapentin Both SJS and TEN are purported to result from a T-cell response leading to keratinocyte apoptosis. While the 2009 H1N1 influenza pandemic garnered much international attention, every year there are an estimated 3 to 5 million severe cases of influenza and nearly half a million deaths worldwide. The clinical course of Dengue in symptomatic cases occurs in three stages: (1) febrile stage, (2) critical stage, and (3) recovery. https://dev.vwc.jv.nl/stmap_0kol134.html?cyproheptadine.coral.amaryl Over 1,800 mutations have been identified due to the extensive collaboration of the CF Foundation with international researchers. Petrolatum also provides a water-impermeable barrier but has no absorbent ability and may trap moisture. However, in most of the world cultures, the concept of illness is intimately related to the spiritual or religious aspects of their respective society. https://dev.vwc.jv.nl/stmap_0kol48.html?sertralin.sulfasalazine.uroxatral This mechanism is associated with acute intravascular hemolysis that can be severe, sometimes leading to hemoglobinuria and renal failure. Aspirin, valproic acid, and tetracycline cause mitochondrial injury by inhibiting ОІ-oxidation and amiodarone via disruption of oxidative phosphorylation. https://dev.vwc.jv.nl/stmap_0kol81.html?levoxyl.zyban.bacopa If serum concentrations of a drug given as a continuous IV infusion decline in a biphasic manner after the infusion is discontinued, a two-compartment model describes the data set (Fig. Also, this model does not allow the prediction of a maximum response. Although NMSCs are the most common malignancy of the skin, cutaneous melanoma accounts for up to 75% of all skin cancer-related deaths.(0) 回复 (0)
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Recovery is a prolonged process and characterized by weakness, fatigue, asthenia, arthralgias, and failure to thrive. Dexamethasone is a corticosteroid that has been used as an alternative to acetazolamide in the treatment and prevention of AMS, HACE, and even HAPE. https://yntwelle.nl/stmap_wppu93.html?gasex.azole.benazepril The parasite's outer shell allows it to be extremely tolerant to chlorinated water and can remain viable up to 10 days in recreational pools. Before exercise begins, a limited cardiac examination is performed (ie, auscultation of the lungs and heart); blood pressure and heart rate are recorded; and a standard 12-lead ECG is recorded. https://yntwelle.nl/stmap_wppu218.html?aleve.omeprazol.flector Malignancies also can adversely affect cellular immunity. Level B evidence is said to exist if only a single randomized trial or multiple, nonrandomized trials exist. https://yntwelle.nl/stmap_wppu89.html?omeprazol.fluticasone.doxepin In three half-lives, serum concentrations are at ~90% of their ultimate steady-state values. A phenotype refers to the outward expression of the genotype. https://yntwelle.nl/stmap_wppu48.html?cyclen.glycomet.arimidex The CDC has specific schedules for routine vaccination and catch-up vaccination. Ultimately, conducting assessments allows for the recognition of opportunities for growth and improvement in order to create a healthcare environment that can achieve better patient outcomes. The topical route of drug administration appears to be the most likely to sensitize and predispose to drug reactions. https://yntwelle.nl/stmap_wppu180.html?fosamax.micronase.optivar More than one cell per high-power field is usually considered abnormal. It should be repeated at 5- to 10-minute intervals until bronchial secretions and pulmonary rales resolve. Competitive inhibition of fibrinogen bindings causes platelet clearance and activation, so concomitant thrombosis may occur.(0) 回复 (0)
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The measles vaccine is comprised of a 3-dose series with the second and third doses given at 1 month and 6 months after the initial dose. ECMO or extracorporeal membrane oxygenation may be necessary to manage the ensuing severe pneumonia and respiratory failure. https://osendarpvacuum.com/stmap_powo156.html?purim.sumycin.ethambutol Most equations incorporate factors such as age, gender, weight, and Scr, without the need for urine collection. A prospective clinical trial demonstrated more severe diarrhea and neutropenia in irinotecan-treated patients who are homozygous or heterozygous carriers of the (TA)7TAA allele. Fungal Infections, Invasive. https://osendarpvacuum.com/stmap_powo216.html?albuterol.propranolol.tizanidine Although Ebola virus is classified as a viral hemorrhagic fever, major bleeding is not a defining symptom. Patients with intermediate-2 and high IPSS risk scores should be transplanted soon after diagnosis to confer the greatest benefit from allogeneic HSCT. Chromosomal abnormalities are found in about 90% of t-MDS compared with 50% to 60% of de novo MDS. https://osendarpvacuum.com/stmap_powo22.html?vera.cefdinir.speman Consumption of sulfites in US diets is estimated to be 2 to 3 mg/day in the home with 5 to 10 mg per 30 mL of beer or wine consumed. In solid organ or stem cell transplant patients, immunosuppression should be minimized as much as possible. https://osendarpvacuum.com/stmap_powo55.html?panadeine.imuran.utrogestan This binding usually is reversible, and an equilibrium is created between protein-bound drug and unbound drug. A large pericardial effusion may appear as a large heart on a chest X-ray, but, in contrast to heart failure, pulmonary vascular congestion is not present (see below). https://osendarpvacuum.com/stmap_powo120.html?zantac.indapamide.donepezil However, for ОІ-lactam antibiotics and glycopeptides, the MBC can exceed the MIC substantially, resulting in an overestimation of in vivo bactericidal activity. Acetaminophen is metabolized in the liver primarily to glucuronide or sulfate conjugates, which are excreted into the urine with small amounts (N-acetyl-p-benzoquinoneimine (NAPQI).(0) 回复 (0)
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Patients who fail initial therapy should preferably be treated with a drug from a different class. In the immune-complex mechanism, antibodies form complexes with the causative drug, and the immune complex adheres to the target cell, leading to cell destruction. https://deskule.nl/stmap_yi8v170.html?montelukast.ciplar.lotensin Percutaneous absorption may be increased substantially in newborns because of an underdeveloped epidermal barrier (stratum corneum) and increased skin hydration. He is diagnosed with Chagas disease (Trypanosoma cruzi). https://deskule.nl/stmap_yi8v80.html?optivar.lithobid.inderal The risk of development of t-MDS may also be higher in patients with congenital neutropenia and aplastic anemia treated with long-term G-CSF. Administration of vaccines and control of diarrhea alone could save millions of these lives annually. https://deskule.nl/stmap_yi8v209.html?vibramycin.antiox.geriforte Overall, these data suggest that ADRB1 genotype may be an important determinant of blood pressure response to ОІ-blockers in the management of hypertension, survival benefits with ОІ-blockers in the management of coronary heart disease, and improvements in cardiac function and clinical outcomes in patients with heart failure. Therefore, it is very likely that most health professionals, including pharmacists, will be serving individuals with limited health literacy skills. They determined that none of the five categories of leg pain (no pain, pain on exertion and rest, noncalf pain, atypical calf pain, and classic claudication) was sufficiently sensitive or specific to enable a link to a PAD diagnosis. https://deskule.nl/stmap_yi8v156.html?citalopram.norplant.rozex One of the most important functions of cardiac catheterization is to measure intracardiac pressures. He asks if he should receive the Hepatitis A vaccine. The most common adverse effect of lanreotide therapy is headache. https://deskule.nl/stmap_yi8v177.html?prochlorperazine.relafen.ipratropium Raynor and colleagues also found that consumer medication information handouts do not meet people's information needs. Viruses such as cytomegalovirus, especially in patients with acquired immune deficiency syndrome (AIDS), and parasites such as Entamoeba histolytica and Giardia lamblia are occasionally seen.(0) 回复 (0)
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Sleep-Wake Disorders. The loading dose will be given IV as a digoxin injection: LD = (1.5 mcg/L)(380 L) = 570 mcg, rounded to 500 mcg. https://cateringvelthuis.nl/stmap_9jd7124.html?diprolene.duphalac.anacin The postantibiotic effect (PAE) is defined as the persistent suppression of an organism's growth after a brief exposure to an antibiotic. Hereditary forms of these subtypes are associated with the Birt-Hogg-Dube syndrome, which is characterized by hair follicle fibrofolliculomas of the face and neck and lung cysts, in addition to RCC, in 15% to 30% of affected individuals. Intermediate syndrome becomes manifest in some patients approximately 1 to 3 days after exposure and generally resolves within weeks of onset without further treatment. https://cateringvelthuis.nl/stmap_9jd7175.html?anadin.hoodia.granisetron Because of this, a modified dosage regimen with a Cmin,ss = 10 mg/L (10 mcg/mL; 7 Ојmol/L) was suggested to maintain an AUC24/MIC ratio greater than 400. Destruction of the pituitary gland may result in secondary hypothyroidism, hypogonadism, adrenal insufficiency, GH deficiency, and hypoprolactinemia. https://cateringvelthuis.nl/stmap_9jd7168.html?starlix.diclofenac.acyclovir For example, the discovery that CML was caused by chromosome translocation and consequent production of an enzyme capable of producing life-threatening lymphocyte levels led to accelerated FDA approval of imatinib (also known as STI-571), an inhibitor of the translocation-created enzyme, for treatment of CML. In the patient undergoing myocardial perfusion imaging for the evaluation of coronary artery disease, exercise stress is preferred over pharmacologic stress, since it allows an assessment of the patient's exercise capacity, symptoms, ST segment changes, and level of exertion that results in ischemia. This form of the model relates drug concentration to the fraction of the maximum effect. https://cateringvelthuis.nl/stmap_9jd7204.html?protonix.colcrys.belara With SPECT, the camera detectors rotate around the patient in a circular or elliptical fashion, collecting a series of planar projection images at regular angular intervals (Fig. Patient risk factors, such as travel history and exposure to rodents or fleas, should be assessed prior to starting therapy. The stannous chloride is given to prevent the technetium from leaking from the red blood cells. https://cateringvelthuis.nl/stmap_9jd7166.html?mentat.rabeprazole.bystolic P-glycoprotein was first recognized for its ability to actively export anticancer agents from cancer cells and promote multidrug resistance to cancer chemotherapy. The International Prognostic Scoring System–Revised R] includes several additional cytogenetic abnormalities, including trisomy 8 or 19, 12p or 11q deletions, and double abnormalities, that correlate with the clinical course of MDS. Like postexposure prophylaxis the antibiotic choices, dosing, and duration for treatment are the same.(0) 回复 (0)
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It is therefore important that accepted terms associated with celiac disease be used, and understood when engaging in patient consultations or discussions with other healthcare providers. Vitamin A is normally stored in liver cells, and causes significant hypertrophy and fibrosis when taken for long periods in high doses. dolormin.meticorten.metaxalone Genetic, environmental, and immune factors all play a role in the development of celiac disease. In a patient with hyperinfection or disseminated strongyloidiasis, immunosuppressive drugs should be discontinued and ivermectin treatment should be prolonged until all symptoms are resolved (duration of 5-14 days). The median response duration for ESAs in MDS is 1 to 2 years, and the ESA should be discontinued if there is no benefit or the response wanes. periactin.minocin.casodex Some laboratories also add ОІ-lactamase to their blood collection bottles to inactivate antibiotics such as penicillins or cephalosporins. Ile359Leu) are the two most common CYP2C9 variants in whites, and both exhibit single-amino-acid substitutions at positions critical for enzyme activity. Some clinicians obtain steady-state peak and trough concentrations and use the kinetic equations given earlier to adjust the dose and dosage interval in order to attain appropriate target levels. origin.vibramycin.valtrex The BCMA process involves using medications dispensed by the pharmacy with a bar code on the medication. It should not be surprising that skin health is related to overall health. alesse.prinivil.minocycline Hepatitis, Viral. In 2006 and 2007, there were several reports of heparin-dispensing errors to neonatal patients caused by different concentrations of the same medication used to service the needs of neonates and adults (neonatal and adult product mix-up). isotretinoin.naprosyn.xenical Reactions typically occur after 5 to 10 days of therapy. The resulting iron—deferoxamine complex, ferrioxamine, is then excreted in the urine. Pulmonary infiltrates with eosinophilia (LГ¶ffler syndrome) are associated with nitrofurantoin, para-aminosalicylic acid, methotrexate, sulfonamides, tetracycline, chlorpropamide, phenytoin, NSAIDs, and imipramine (Table e30-5).(0) 回复 (0)
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Patients with limited health literacy have a higher risk for emergency care use, less use of preventive services, poorer skills in taking medications, and more hospitalizations. The most common adverse effects of somatostatin analog therapy are GI disturbances such as diarrhea, nausea, abdominal cramps, malabsorption of fat, and flatulence. To address concerns regarding the potential misuse of genetic and pharmacogenetic information by health insurance companies and employers, former President George W. uric.panadol.glycomet Note that abnormal keratinocyte activity accounts for some skin diseases. Overexpression of the human epidermal growth factor receptor 2 (HER2, also known as Her2/neu and ErbB2), secondary to HER2 gene amplification occurs in 20% of metastatic breast cancers and is associated with more aggressive cancer and decreased survival. efferalgan.trileptal.domperidone Lastly, palliative care practitioners must continually strive to ensure that all treatments provided to patients with serious illness are consistent with the patients' goals of care, and are not associated with burdens that outweigh potential benefits. IVUS is used as a therapeutic adjunct to percutaneous coronary intervention, atherectomy, stent or graft placement, and fibrinolysis, although its routine use with these modalities may not be justified. naproxen.cipramil.prilosec The most common natural causes of death among older travelers are cardiac-related. This approach can lead to better estimates of the remaining model parameters. lithobid.amoxicillin.riomet In the clinical setting, the renal clearance of PAH is considered an index of _______. Other agents used to treat scabies include topical crotamiton 10% (Eurax) and oral ivermectin (Stromectol) 200 mcg/kg as a single dose, which may be repeated in 2 weeks. plavix.microgynon.tryptophan For example, small, nontoxic, exogenously administered fluorescent tracers are being investigated for "real-time" GFR measurement, and at least two have entered early phase clinical trials. For a detailed discussion of hematologic drug reactions, see Chapter e103.(0) 回复 (0)
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